Step Functions definitions: your Lambda names, ready to paste

A Step Functions state machine definition has to reference the exact names of the Lambda functions it calls — and those names are generated at deploy time by CloudFormation, so hand-typing them is guesswork that fails only after you deploy. Now, when you connect Lambdas to a Step Functions node, the exact deploy-time name of each connected function is listed directly above the Definition field, each with a copy button. Copy, paste into your state definition, deploy. No digging through generated templates, no broken references discovered twenty minutes into a stack create.

Try it: connect two Lambdas to a Step Functions node and open its Definition field.