Python functions
The definitive Python function guide — handler contract, deploy, triggers, secrets, invoke and stream, logs, updates, and calling other services.
Node.js functions
The definitive Node.js function guide — handler contract, async supported, deploy, triggers, secrets, invoke and stream, logs, updates, and calling other services.
Go functions
The definitive Go function guide — compiled into the shim, standard library only, deploy, triggers, secrets, invoke, logs, updates, and common build failures.
Ruby functions
The definitive Ruby function guide — handler contract, Gemfile, deploy, triggers, secrets, invoke, logs, updates, and the string-vs-symbol statusCode gotcha.