Paste your SAM / CloudFormation / Terraform / Serverless config (or a list of runtimes), or click the runtimes you use. This checks them against the AWS runtime deprecation schedule and shows exactly when AWS blocks creating and updating functions. Runs in your browser — nothing is uploaded.
Dates come from the AWS Lambda runtime deprecation table and can shift; the per-runtime migration guides link the AWS source. Functions keep running after deprecation, but become unpatched and — after the block-update date — frozen.
Each deprecated runtime fails in specific ways — removed stdlib modules, the unbundled AWS SDK v2 on Node 18+, native-wheel/ABI breaks, Amazon Linux 2 → 2023 package renames. See the common error fixes, run the free full scanner, or get a hash-anchored audit ($299, 30-day money-back) that scores every finding and hands back a roll-forward plan.