Salesforce integration questions, answered.

A Salesforce integration connects Salesforce with another system so data or actions can move between them. Depending on the requirement, this may use APIs, Apex callouts, middleware, events, webhooks or other supported mechanisms.

It depends on system boundaries, transformation complexity, monitoring, volume, authentication and operational ownership. Simple interactions may fit Apex and Salesforce-native capabilities, while broader orchestration may benefit from middleware.

A REST integration exchanges data or actions through HTTP endpoints using structured requests and responses. In Salesforce projects, REST can be used to communicate with external services or expose Salesforce data through supported APIs.

Check endpoint availability, authentication, permissions, request format, response handling, timeouts, limits and environment configuration. Log enough information to identify the failing stage without exposing secrets.

Use supported secure credential mechanisms rather than hard-coding secrets in JavaScript, Apex or configuration files. The exact option depends on the Salesforce integration pattern and external system.

Yes, when the external system can call an appropriate endpoint and the Salesforce architecture supports the required authentication, processing and security model. High-volume or asynchronous workflows may need additional architecture.

Define the system of record, synchronization direction, trigger conditions, conflict rules, field mappings, retry behavior and failure handling first. Then choose synchronous or asynchronous integration patterns based on the workload.

Use stable external identifiers, idempotent processing and clear upsert or matching rules. Duplicate prevention should be designed into the integration rather than handled manually after records are created.

Measure where the latency occurs: Salesforce query, external API, network, transformation, queueing or UI rendering. Optimize the slow stage and consider asynchronous processing when the user does not need an immediate response.

Yes, depending on the architecture. The UI can react to refreshed data, events or message-based mechanisms. The implementation should avoid unnecessary polling and full-page reloads.

Classify errors into retryable and non-retryable cases, record useful diagnostics, show meaningful user feedback where appropriate and avoid exposing sensitive technical details. Robust integrations treat failure as a normal state.

An integration audit reviews endpoints, authentication, data mappings, error handling, limits, retries, monitoring and ownership. It helps identify reliability and maintainability risks before they become production incidents.

Yes. Custom applications can communicate with Salesforce through supported APIs and integration patterns. The design should account for authentication, data ownership, rate limits, failure recovery and long-term maintainability.

Use isolated environments and test data, verify both successful and failure paths, simulate timeouts and invalid responses, and confirm that credentials and logs do not expose sensitive information.

Rebuild when the current design is unreliable, insecure, impossible to monitor or too tightly coupled to changing systems. If the core architecture is sound, targeted refactoring may be enough.