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Concept for connecting applications and services via defined interfaces to automate and coordinate data and process flows.
API integration connects heterogeneous applications, microservices, and data sources through well-defined interfaces and protocols to automate and synchronize data and business process flows. It includes API design, authentication, mapping, orchestration, monitoring, versioning and error handling. Proper integrations increase reusability, scalability and operational reliability.
Number of API calls processed per second; important for scaling.
Percentage of failed calls; indicator of stability.
Response time distributions to assess performance and SLAs.
Standardized REST interfaces with OpenAPI specification to unify different services.
Events are delivered via webhooks to subscribed systems to enable near-real-time synchronization.
Use of an API gateway for centralized authentication, rate limiting and monitoring.
Capture requirements and integration scenarios
Define and version API contracts with OpenAPI
Implement authentication and authorization layer
Implement mapping, transformation and error logic
Establish monitoring, tests and rollout strategy