APIs, Networking & Integration Topics
API design, management, and integration patterns including REST, GraphQL, and other protocols. Covers API contract design, versioning strategies, error handling, idempotency, deprecation planning, and SDK/integration frameworks. Includes system-to-system integration, webhook patterns, and integration platform considerations. Excludes network infrastructure and network-layer protocols (see Network Architecture under Cloud & Infrastructure or a dedicated networking category if needed).
Enterprise Application Integration
Connecting large, heterogeneous enterprise systems into a coherent whole: interoperability across legacy and modern platforms, integration architecture for digital transformation, standards-based interfaces, and system-of-record coordination. Covers integration platforms/middleware, canonical data models, and the interoperability and governance concerns of complex multi-system landscapes.
API Versioning, Deprecation and Backward Compatibility
Evolving an API without breaking existing consumers: versioning strategies (URI, header, media-type), distinguishing breaking from non-breaking changes, deprecation policies and sunset timelines, and coordinating migrations at scale. Covers communicating changes, supporting multiple versions concurrently, and compatibility guarantees across heterogeneous clients.
API Gateways and API Management
The management layer in front of APIs: gateways for routing, authentication, rate limiting, request/response transformation, and observability. Covers API management concerns such as developer portals, key provisioning, plan/tier enforcement, analytics, and centralized policy. The operational and productization surface of an API program.
Backend-for-Frontend and Client-Specific API Design
Shaping APIs to the needs of specific consumers: Backend-for-Frontend (BFF) pattern, aggregating/tailoring payloads per client, mobile vs. web bandwidth and battery constraints, and reducing round trips for constrained clients. Covers response shaping, partial responses, and balancing a generic API against client-optimized endpoints.
Third-Party and SaaS Integration
Integrating with external providers and SaaS platforms (CRM, marketing, payments, HR, and similar): consuming partner APIs, handling auth and rate limits you do not control, mapping external data models to internal ones, and resilience when a dependency is down. Covers connector/adapter design, sandbox testing, and managing vendor-specific quirks across many integrations.
API Documentation and Developer Experience
Making an API easy and pleasant to adopt: reference docs, quickstarts, examples, changelogs, and interactive/OpenAPI-driven documentation. Covers developer experience (DX) as a product concern, onboarding time, consistency and discoverability, and treating the API as a product with its consumers as users.