Integration-Architect Salesforce Certified Integration Architect (SU24) Questions and Answers

The mobile device should make a REST Apex inbound call to meet the requirement. A REST Apex inbound call allows the mobile device to invoke custom Apex logic on Salesforce using a RESTful interface. The Apex logic can then access the geolocation field using the user’s OAuth token and update it with the GPS coordinates from the mobile device. The geolocation field is secured with Field Level Security, so the user can view the value without changing it. A SOAP API inbound call or a REST API inbound call would not be able to access the custom geolocation field, as they are not supported by the standard Salesforce objects and fields. Reference: Salesforce Integration Architecture Designer Resource Guide, page 20

Visually monitor in the Salesforce UI using the “Bulk Data Load Jobs” in Salesforce in the setup menu, and use the getBatchInfo method in the Java application to monitor the status of the jobs from the Java application. These two methods can help the Technical Architect to monitor the nightly batch loads into Salesforce from an external system with a custom Java application using the Bulk API. The “Bulk Data Load Jobs” page in Salesforce shows the status, progress, and results of each batch load job. The getBatchInfo method in the Java application returns a BatchInfo object that contains information about a batch, such as its ID, state, number of records processed, and number of errors. References: Certification - Integration Architect - Trailhead, [Bulk API Developer Guide]

The set of APIs recommended to meet the requirements are Bulk API, Streaming API, Apex REST API, and Analytics REST API. Bulk API is a RESTful API that allows you to quickly load large amounts of data into Salesforce. Bulk API is suitable for the initial load of millions of records into the new org. Streaming API is a type of streaming event that notifies subscribers of changes to Salesforce records that match a SOQL query. Streaming API is suitable for sending notifications of new and updated Accounts and Contacts to external systems. Apex REST API is an API that allows you to expose custom business logic as RESTful web services that can be accessed by external applications. Apex REST API is suitable for exposing custom business logic in a highly secure manner. Analytics REST API is an API that allows you to access analytics features, such as dashboards, lenses, datasets, and dataflows. Analytics REST API is suitable for scheduling nightly automated dataflows, recipes and data syncs. The other sets of APIs are not suitable for meeting all the requirements. Chatter REST API is an API that allows you to access Chatter feeds and social data such as users, groups, followers, and files. Chatter REST API is not relevant for this scenario. Apex SOAP API is an API that allows you to expose custom business logic as SOAP web services that can be accessed by external applications. Apex SOAP API is less preferable than Apex REST API because it requires more bandwidth and processing time due to the XML format. Tooling API is an API that allows you to build custom development tools or apps for Salesforce applications. Tooling API is not relevant for this scenario.

Streaming API is the best option for sending real-time notifications of changes to Salesforce data. Streaming API uses a publish-subscribe model to push relevant data to subscribers without polling. Streaming API supports PushTopic events, which are based on SOQL queries that define the data changes to listen for. The affiliate company can subscribe to a PushTopic event on the NTO Salesforce org and receive notifications whenever the data that matches the query changes. This way, the affiliate company can be informed of any updates to the opportunities in the NTO Salesforce instance.

SObject Collections is a REST API composite resource that allows you to create, update, or delete up to 200 records in one API call. You can specify the type of operation (create, update, or delete) for each record in the request body, and the response body will contain the status and IDs of each record. SObject Collections is suitable for bulk operations on records that are not related to each other1.

SObject Tree is another REST API composite resource that allows you to create up to 200 records in one API call. However, unlike SObject Collections, SObject Tree requires the records to be related to each other in a hierarchy. You can specify the parent and child records in a JSON tree structure, and the response body will contain the reference IDs and URLs of each record. SObject Tree is suitable for creating nested data in one request2.

Batch is a REST API composite resource that allows you to combine up to 25 requests in one API call. Each request can be a different type of operation (query, create, update, delete, etc.) on different objects. The response body will contain the status and results of each request. Batch is suitable for grouping multiple requests into one transaction3.

Composite is a REST API composite resource that allows you to execute a series of REST API requests in one API call. You can use the output of one request as the input of another request using a reference ID. The response body will contain the status and results of each request. Composite is suitable for chaining requests that depend on each other.

Therefore, the correct answer is A, because SObject Collections is the only REST API composite resource that allows bulk updates on records that are not related to each other.

References: 1: SObject Collections | REST API Developer Guide | Salesforce Developers 2: SObject Tree | REST API Developer Guide | Salesforce Developers 3: Batch | REST API Developer Guide | Salesforce Developers : [Composite | REST API Developer Guide | Salesforce Developers]

A Connected App is a framework that enables an external application to integrate with Salesforce using APIs and standard protocols, such as OAuth. By configuring a Connected App in Salesforce, the integration can authenticate the middleware and grant access to the Salesforce data and services. This is a secure and flexible solution that does not require configuring Remote Site Settings, API Gateway, or Firewall and reverse proxy2

References: 1: BatchApexErrorEvent 2: Connected Apps

 Reducing the batch size of asynchronous BULK API and submitting the legacy system in parallel mode are two recommendations that can improve the integration performance. The BULK API is designed to handle large-scale data loads, but it can also cause latency issues if the batch size is too large or the network bandwidth is insufficient. Reducing the batch size can help to avoid timeouts and improve throughput. Submitting the legacy system in parallel mode can also speed up the integration process by allowing multiple batches to be processed concurrently, as long as there are no dependencies or conflicts between them. Reference: Salesforce Integration Architecture Designer Resource Guide, page 21

 Using a third party integration tool to stage records off platform is a solution that can handle the high volume of data and avoid hitting the API limits for the REST API call to the external system. A third party integration tool can also provide features such as data transformation, error handling, and logging. Due to high volume of records, number of concurrent requests can hit the limit for the REST API call to external system is not a solution, but a problem that needs to be addressed. Due to high volume of records, the external system will need to use a BULK API Rest endpoint to connect to Salesforce is not a solution, as the requirement is to send data from Salesforce to the external system, not vice versa. Due to high volume of records, Salesforce will need to make a REST API call to external system is not a solution, as it does not address how to handle the high volume of data and avoid hitting the API limits. Reference: Salesforce Integration Architecture Designer Resource Guide, page 18-19

The integration consultant should implement monitoring by identifying critical business processes and establishing automation to monitor performance against established benchmarks. This approach can help detect and diagnose any degradation in Salesforce performance, such as slow response time, high error rate, or low availability. The automation can use various tools and methods, such as platform events, event monitoring, health check, or third-party monitoring services123

References: Proactive Monitoring - Salesforce.com, 17 Free Ways to Monitor Your Salesforce Org | Salesforce Ben, Measure Lightning Experience Performance and Experienced … - Trailhead

The first thing an integration architect should validate if a callout from a Lightning Web Component to an external endpoint is failing is the endpoint domain has been added to Cross-Origin Resource Sharing (CORS). CORS is a mechanism that allows web browsers to make requests to servers on different origins, such as different domains, protocols, or ports. CORS requires the server to send back a special header that indicates whether the browser is allowed to access the resource or not. If the endpoint domain is not added to the CORS whitelist in Salesforce, the browser will block the callout and throw an error. Option B is not correct because Content Security Policies (CSP) are used to control what resources can be loaded on a Visualforce or Lightning page, such as scripts, stylesheets, images, etc. CSP does not affect the callout from a Lightning Web Component to an external endpoint. Option C is not correct because outbound firewall rules are used to restrict the network traffic from Salesforce to external systems. Firewall rules are configured at the network level, not at the Salesforce level. Option D is not correct because Remote Site Settings are used to specify the domains that are allowed for callouts from Apex code, not from Lightning Web Components. References:

• Working with CORS and CSP to Call APIs from LWC
• [Cross-Origin Resource Sharing (CORS)]

Outbound Messaging and Platform Events are both suitable solutions for capturing and sending business events from Salesforce to an external system in real time. Outbound Messaging allows you to specify workflow rules that send SOAP messages with field values to designated endpoints1. Platform Events are secure and scalable messages that contain data and can be published and subscribed to using various APIs2. A trigger or a custom Apex controller can be used to publish platform events from Salesforce34. A callout is not a suitable solution because it is a synchronous request that may fail or timeout, and it also consumes API limits. A contract-first Outbound Messaging interface is not a valid option because Outbound Messaging uses a predefined WSDL that cannot be customized

• Answer A is valid because creating an Auth provider in the package and setting the consumer key and consumer secret of the connected app in the central org can allow the package to authenticate with the central org using OAuth 2.0. An Auth provider is a configuration that specifies how to connect to an external service that uses a specific identity protocol. A connected app is an application that can access Salesforce resources using APIs and standard protocols. The consumer key and consumer secret are credentials that identify the connected app to Salesforce.
• Answer C is valid because creating a connected app in the central org and adding the callback URL of each org the package is installed in to redirect to after successful authentication can enable the package to obtain an access token from the central org using OAuth 2.0. The callback URL is a parameter that specifies where the user should be redirected after granting or denying permission to access Salesforce resources. The access token is a credential that can be used to invoke the custom Apex REST endpoint in the central org.
• Answer E is valid because using the Auth Provider configured and selecting the identity type as Named Principal with OAuth 2.0 as the protocol and selecting Start Authentication Flow on Save can initiate the authentication flow when installing the package. The identity type determines how the package accesses Salesforce resources on behalf of users or an application. The Named Principal identity type means that the package uses a single credential, such as a username and password or an access token, to access Salesforce resources for all users. The Start Authentication Flow on Save option means that the package will prompt the user to enter the credential when saving the Auth Provider configuration.
• Answer B is not valid because contacting Salesforce support and creating a case to temporarily enable API access for managed packages is not a necessary or recommended action. API access for managed packages is enabled by default and does not require any special permission or configuration from Salesforce support. Moreover, this action does not address the security requirement of using a specific integration account in the central org that will be authorized after installation of the package.
• Answer D is not valid because using an encrypted field to store the password that the security team enters and using password management for external orgs and setting the encryption method to TLS 1.2 is not a secure or reliable solution. An encrypted field is a custom field that encrypts sensitive data at rest and masks it on the user interface. However, this field does not prevent unauthorized access or leakage of data, as it can be decrypted by users who have the View Encrypted Data permission or by Apex code that runs in system mode. Moreover, this field does not support encryption methods such as TLS 1.2, which are used for securing data in transit, not at rest.

References: Auth Provider: Connected Apps : OAuth 2.0 Web Server Authentication Flow : Named Credentials as Callout Endpoints : API Access in Packages : Encrypted Fields : Encryption Methods Available in Salesforce

11of30

 Invoking middleware service to retrieve valid shipping methods is a solution that can allow the sales representatives to select between valid services for the customer’s country. The middleware service can act as a single point of entry for all shipping services and provide routing and transformation capabilities. Using middleware to abstract the call to the specific shipping services is a solution that can allow the sales representatives to request shipping estimates from the selected service. The middleware can hide the complexity and heterogeneity of the shipping services and provide mediation and orchestration capabilities. Using Platform Events to construct and publish shipper-specific events is not a solution, as Platform Events are used for event-driven integration, not for web-service integration. Storing shipping services in a picklist that is dependent on a country picklist is not a solution, as it does not address how to request shipping estimates from the shipping services. Reference: Salesforce Integration Architecture Designer Resource Guide, page 16-17

Event Monitoring is used to track user activity, such as logins and running reports, but it is not related to Platform Events. Subscribe to an AssetTokenEvent stream to monitor OAuth 2.0 authentication activity is also not related to Platform Events. When an event definition is deleted, it’s permanently removed and can’t be restored. This means that the event definition and its associated data are no longer available for subscribers or queries.

The Salesforce Community Cloud should support OpenId Connect Authentication Provider and Registration Handler, and SAML SSO and just-in-time provisioning for self-registration and SSO. OpenId Connect is a protocol that allows users to authenticate with an external identity provider and access Salesforce resources. A registration handler is a class that implements the Auth.RegistrationHandler interface and defines how to create new users or update existing users in Salesforce from the information received from the identity provider. SAML SSO is a protocol that allows users to log in to Salesforce with a single credential from an identity provider. Just-in-time provisioning is a feature that allows creating or updating user accounts in Salesforce based on SAML assertions.

References: [OpenID Connect Authentication Providers], [Registration Handler Interface], [SAML Single Sign-On for Communities].

Leverage Change Data Capture to track changes to the Contact object and write a CometD subscriber on the homegrown application. This solution meets the requirements of keeping Salesforce and the homegrown application synchronized for consistency, using event-driven and asynchronous integration. Change Data Capture is a feature that allows you to receive near real-time notifications of changes to Salesforce records, such as inserts, updates, deletes, and undeletes. You can use Change Data Capture to track changes to the Contact object, and publish them as events to an event bus. CometD is a protocol that allows you to subscribe to events from the event bus using a streaming API. You can write a CometD subscriber on the homegrown application, and use it to receive the events and update the customer data accordingly. References: Certification - Integration Architect - Trailhead, [Change Data Capture Developer Guide], [Streaming API Developer Guide]

This is because SSL/TLS mutual authentication is a security feature that allows Salesforce to verify the identity of the client that connects to its API endpoint on port 8443. To enable this feature, you need to upload a client certificate to Salesforce and assign the “Enforce SSL/TLS Mutual Authentication” user permission to the users who need to access the company portal. The other options are not sufficient for this scenario because:

• A, Enable My Domain and SSL/TLS, is a prerequisite for using SSL/TLS mutual authentication, but it does not ensure that all integrations use it. My Domain allows you to customize your Salesforce domain name and SSL/TLS provides encryption for your data in transit.
• C, Generate a Self-signed Certificate, is a step that you need to do on the client side to create a certificate that can be used for SSL/TLS mutual authentication, but it does not ensure that all integrations use it. You also need to upload the certificate to Salesforce and assign the user permission.
• D, Generate a CA-signed Certificate, is an alternative to generating a self-signed certificate, but it also does not ensure that all integrations use SSL/TLS mutual authentication. You still need to upload the certificate to Salesforce and assign the user permission.

References:

• Certificates in Mutual Authentication
• Configure Your API Client to Use Mutual Authentication
• Salesforce Mutual Authentication Setup

The Fire and Forget pattern is suitable for this business use case because it allows sending a message from Salesforce to the remote system without waiting for a response or acknowledgement. This reduces the latency and complexity of the integration and enables asynchronous processing of the orders in the remote system. The platform event defined in Salesforce can be used to publish the order details to the remote system, which can subscribe to the event and create the order accordingly1

Trigger invokes Queueable Apex method, with custom error handling process. Queueable Apex allows you to run asynchronous jobs that can make callouts to external web services. You can use custom error handling logic to handle any failures and retry the callouts if necessary. You can also use Database.Stateful interface to maintain state across transactions and ensure that each order is sent exactly once. This solution meets the requirements of sending order and line items directly to an existing finance application web service when an order is fulfilled, and ensuring that each order reaches the finance application exactly once for accurate invoicing. References: Certification - Integration Architect - Trailhead, [Queueable Apex], [Making a Web Service Callout from a Queueable Apex Job]

The continuation class in Apex allows you to make long-running requests to external web services and process their responses in a callback method. This is useful for scenarios where the response time exceeds the normal Apex limits, such as 10 seconds for synchronous transactions or 120 seconds for asynchronous transactions. By using continuation, you can avoid hitting these limits and provide a better user experience1

References: Callout Limits and Limitations

Using an Enterprise Service Bus (ESB) to determine which shipping service to use, and transform requests to the necessary format is a good solution because it can provide routing, transformation, mediation, and orchestration capabilities for integrating different services. An ESB can also abstract the complexity and heterogeneity of the services from the client application, which simplifies the integration. Using Outbound Messaging to request costs and delivery times from Shipper delivery services with automated error retry is not a good solution because Outbound Messaging is a Salesforce-specific feature that uses SOAP web services, which may not be compatible with all shipping services. Using APEX REST Service to implement routing logic to the various shipping service is also not a good solution because it can introduce performance and scalability issues, as well as increase the maintenance cost and complexity of the code. Using Enterprise Service Bus user interface to collect shipper-specific form data is not a valid option because an ESB does not have a user interface component. Reference: Salesforce Integration Architecture Designer Resource Guide, page 16-17

The requirements that the integration architect should evaluate while designing the integration needs of this project are:

• Assess security requirements for internal systems and decide Integration methods that support the requirements.
• Evaluate the build of a custom authentication mechanism for users in each country and support for customers and partners.
• Evaluate Salesforce native authentication mechanism for all users including customers and partners.

The integration architect should assess the security requirements for internal systems, such as the ERP system and other systems that will be integrated with Salesforce for Sales and Support business processes. The security requirements may include authentication protocols, encryption standards, data access policies, and compliance regulations. The integration architect should then decide on the integration methods that support these requirements, such as SOAP or REST APIs, middleware solutions, or connectors. The integration architect should also evaluate the build of a custom authentication mechanism for users in each country and support for customers and partners. A custom authentication mechanism may be necessary to integrate with the local active directory of each country and provide a seamless user experience. The integration architect should also consider how to support customers and partners who have different authentication options, such as self-registration or Google login. The integration architect should also evaluate Salesforce native authentication mechanism for all users including customers and partners. Salesforce native authentication mechanism is a built-in feature that allows users to log in to Salesforce with their username and password. Salesforce native authentication mechanism may be simpler and easier to implement than a custom or third-party solution, but it may not meet all the security requirements or user preferences. The integration architect should compare the pros and cons of each option and choose the best one for the project. Evaluating Salesforce solution for customers and for partners, using third party solution for internal users is not a valid requirement because it does not address the need to authenticate internal users with their local active directory. Considering third party Single Sign On solution supporting all user authentication including customer and partner is not a valid requirement because it does not address the need to integrate with internal systems and their security requirements.

The message durability considerations that an Integration Architect should make when designing a solution to meet these business requirements are:

• When subscribing to Salesforce Event bus, ReplayID is used with a value of -2 to be able to see old and new events.
• High-volume event messages are stored for 72 hours (three days).

A Salesforce Event bus is a messaging service that allows you to publish and subscribe to events in Salesforce or from external sources. ReplayID is a property of an event message that indicates its position in the event stream. By using ReplayID with a value of -2, you can replay all events stored in the retention window, which can help you see the stages of order processing in Salesforce. High-volume event messages are a type of event message that can handle large volumes of data and are optimized for performance and scalability. High-volume event messages are stored for 72 hours (three days) in the event bus, which means they can be replayed within that time frame. The other options are not correct. Using ReplayID with a value of -1 means you can only see new events that are published after your subscription. High-volume event messages are not stored for 24 hours (one day), but for 72 hours (three days).

• Option D is correct because Platform Shield Encryption allows you to encrypt standard fields and use them in workflow rules. Platform Shield Encryption uses AES 256-bit encryption to protect sensitive data at rest, while preserving platform functionality12
• Option A is incorrect because Cryptography Class is a set of Apex methods for creating digests, message authentication codes, signatures, and encryption. It does not provide a way to encrypt standard fields or use them in workflow rules3
• Option B is incorrect because Data Masking is a feature that replaces sensitive data in sandboxes with dummy data. It does not encrypt data in production or allow the use of encrypted data in workflow rules45
• Option C is incorrect because Classic Encryption is a feature that encrypts custom fields with 128-bit AES encryption. It does not support standard fields or workflow rules67

References: 1: Salesforce Shield - Data Monitoring & End to End Encryption 2: How Shield Platform Encryption Works 3: Crypto Class 4: Data Masking - Anonymize Sensitive Data 5: Secure Your Sandbox Data with Salesforce Data Mask 6: What’s the Difference Between Classic Encryption and Shield Platform Encryption? 7: Salesforce Classic vs. Salesforce Shield Platform Encryption: Which One Do You Need?

The integration architect should recommend using Salesforce Connect to display the financial transactions as an external object. Salesforce Connect is a feature that allows you to integrate external data sources with Salesforce and access them in real time via external objects. External objects are similar to custom objects, but they store metadata only and not data. You can use external objects to display data from the core banking system in the customer community without copying or syncing the data. You can also use standard Salesforce features, such as reports, dashboards, or global search, with external objects. Salesforce External Service is a feature that allows you to import an external schema definition and generate an Apex wrapper class that can invoke an external service. This is useful for integrating complex business processes or workflows with Salesforce, but not for displaying data in a community lightning page. Iframe is a HTML element that allows you to embed another web page within a web page. This is not a recommended solution for displaying data in a customer community, as it can pose security risks, performance issues, or user interface problems.

References: [Salesforce Connect], [Salesforce External Services], [Using Iframes in Lightning Components]

The Connect REST API is designed to access Chatter feeds and social data such as users, groups, followers, and files. By using this API, the integration can query the Chatter posts that include the #thanksNTO hashtag and post them to Twitter using another API. The REST API, Streaming API, and Apex REST are not specific to Chatter and do not provide the same level of functionality and ease of use as the Connect REST API2

References: 1: Fire and Forget Pattern 2: Connect REST API

 A trigger is a programmatic way of executing some logic when a record is inserted, updated, deleted, or undeleted in Salesforce. A trigger can invoke an Apex class that contains the code to perform a REST callout to an external system. A REST callout is a way of sending an HTTP request to a service endpoint and receiving a response. A REST callout can be synchronous or asynchronous, depending on whether the Apex code waits for the response before continuing the execution. A synchronous callout is suitable for scenarios where the response is needed immediately, such as order fulfillment1.

An Apex proxy class is a class that is generated from a WSDL (Web Service Description Language) document of an external SOAP web service. An Apex proxy class can be used to make a SOAP callout to the external web service, but not a REST callout. A SOAP callout is another way of sending an HTTP request to a service endpoint and receiving a response, but it uses a different format and protocol than REST2.

Process Builder is a declarative tool that allows you to automate business processes by defining criteria and actions. Process Builder can invoke an Apex class that implements the Process.Plugin interface, which allows you to extend the functionality of Process Builder with custom logic. However, Process Builder does not support synchronous callouts, because it runs in the background and does not wait for the response from the external system. Process Builder only supports asynchronous callouts, which are executed after the transaction is committed3.

Batch Apex is a way of processing large volumes of data asynchronously by breaking them into smaller batches of records. Batch Apex can be used to perform complex or long-running operations on data, such as data cleansing, archiving, or integration. Batch Apex can make callouts to external systems by implementing the Database.AllowsCallouts interface in the batch class. However, Batch Apex is not suitable for scenarios where the callout needs to be synchronous, because it runs in the background and does not wait for the response from the external system. Batch Apex also has some limitations, such as the maximum number of batches in the queue, the maximum number of records per batch, and the maximum number of callouts per batch4.

A Lightning Component is a reusable unit of user interface that can be used to build modern web apps with Salesforce. A Lightning Component can make a callout to an external system by using JavaScript code or by invoking an Apex controller class that contains the logic for the callout. A Lightning Component can make a synchronous or asynchronous callout, depending on whether the JavaScript code or Apex code waits for the response before continuing the execution. However, a Lightning Component is not a good choice for scenarios where the callout needs to be triggered by a record change, such as when an opportunity is closed/won. A Lightning Component requires user interaction, such as clicking a button or loading a page, to initiate the callout5.

Therefore, the correct answer is A, because writing a trigger that invokes an Apex class to make a REST callout to the Order Management System is the only option that satisfies the requirements of making a synchronous callout when an opportunity is closed/won.

References: 1: Callouts From Triggers | Apex Developer Guide | Salesforce Developers 2: Generate an Apex Class from a WSDL | Apex Developer Guide | Salesforce Developers 3: Invoking Apex from Process Builder | Process Automation Developer Guide | Salesforce Developers 4: Using Batch Apex | Apex Developer Guide | Salesforce Developers 5: Make HTTP Requests from JavaScript Code in Lightning Components | Lightning Aura Components Developer Guide | Salesforce Developers

The correct answer is A, C, and D. These are three relevant details that a Salesforce Integration Architect should seek to specifically solve for Integration architecture needs of the program. These details can help the Integration Architect to understand the scope, requirements, and constraints of the integration solution, and to choose the appropriate tools, methods, and patterns. The details are:

• Source and Target system, Directionality, data volume & transformation complexity along with any middleware that can be leveraged. This detail can help the Integration Architect to identify the systems involved in the integration, the direction of data flow, the amount and complexity of data to be exchanged, and the middleware or platform capabilities that can facilitate the integration.
• Timing aspects - real-time/near real-time (synchronous or asynchronous), batch; update frequency. This detail can help the Integration Architect to determine the latency, reliability, and scalability requirements of the integration solution, and to choose the suitable integration protocols and techniques.
• Integration Style - Process based, Data based, Virtual integration. This detail can help the Integration Architect to select the appropriate integration style that matches the business needs and objectives. Process based integration focuses on orchestrating business processes across systems, data based integration focuses on synchronizing data across systems, and virtual integration focuses on providing a unified view of data across systems.

References: Certification - Integration Architect - Trailhead, [Integration Patterns and Practices]

A microservice architecture is a way of designing software applications as a collection of loosely coupled services, each of which implements a specific business function. Microservices enable modularity, scalability, and agility in software development, as well as easier testing and deployment. By breaking up the monolithic web service into smaller pieces, each responsible for a single integration, UC can decouple the systems and improve the performance of the integrations. For example, UC can use Salesforce Platform Events to publish and subscribe to events from Salesforce to the legacy billing application, the ERP application, and the data lake. This way, UC can avoid point-to-point integrations and leverage an event-driven architecture that reduces coupling and increases reliability12.

The other options are not as effective as option B. Option A does not address the root cause of the tight interdependencies between systems, and may not result in significant performance improvement. Option C may improve the throughput of data loading into Salesforce, but it does not solve the problem of coupling between systems. Option D may reduce the latency and maintenance costs of the web service, but it does not change the design of the web service or the integrations.

References: 1: Microservice Architectures With Sales and Service Cloud - Salesforce Live 2: 6 Fundamental Principles of Microservice Design | Salesforce