OpenAerialMap (OAM) is a production-grade, full-stack platform for uploading, processing, cataloging, and serving openly licensed aerial imagery, maintained by the Humanitarian OpenStreetMap Team (HOTOSM). The system is composed of multiple microservices: a Litestar-based uploader API with htmx frontend, a FastAPI STAC API backed by pgSTAC, a Go tilepack API for on-demand PMTiles/MBTiles generation, and a React/TypeScript frontend with MapLibre GL. Imagery processing is orchestrated via Argo Workflows (fetch, validate, convert to COG, metadata extraction, STAC registration). The codebase is well-architected with extensive test suites, CI/CD via GitHub Actions, Helm charts for Kubernetes deployment, and architecture decision records (ADRs) documenting key choices.