Developing and supporting 12 SDKs with a team of three
summary
Eppo by Datadog runs 12 production SDKs on nearly a billion devices with a team of three and centralizes logic in one Rust core with thin adapters plus a single conformance suite that runs nightly against a thousands‑input test corpus. Automation and AI codegen generate bindings, validation catches mismatches, and a backend driven universal schema lets new rules roll out without SDK releases so the team cut 75% duplicated code and can add new SDKs in days while release cadence jumps tenfold.
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