Definitions You’ll See

• Cold start: the extra latency when a platform initializes a new runtime for a function that isn’t warm yet (e.g., boot language runtime, load code).
• Warm start: reusing an existing runtime/container so the handler starts faster.
• Provisioned concurrency / min instances: configuration to keep a baseline of warm runtimes to reduce cold starts.
• Stateless: each invocation should not rely on prior in-memory state; use external state (DB, cache, object storage).