AWS AppConfig: Feature Flags, Configuration, and How Services Read Them
· 8 min read
We centralized feature flags and service configuration in AWS AppConfig instead of a monolith flag store and S3 env files baked in by CI/CD. Amazon’s AppConfig Agent or extension delivers settings on localhost:2772; backend services use one shared library with the same read pattern on every stack. Fictional examples: payments-api, client-app, flag enable_new_checkout_flow.