Multi-service · Difficulty 5 of 5 · 90 min
Checkout workflows stall before they finish
Checkout workflows stall mid-flow: some steps succeed, but the steps meant to undo a failure never run and order records end up inconsistent. Records that track each payment attempt pile up and never age out. Leftovers from earlier iterations remain. Restore end-to-end completion.
Where the symptom shows: Step Functions
Take this challenge on a live account
A live AWS account, already broken, and a clock. You fix it with the provider's own console and command line, then read a report of how you worked. We host the cloud account. Nothing lands on your bill.
More challenges
- Multi-serviceThe order path, broken in four placesSQS · 90 min · level 5
- Multi-serviceValid sessions refused at the entry pointAPI Gateway · 90 min · level 5
- ResiliencePrivate workloads reach nothing they depend onEC2 · 90 min · level 5
- AI assistantsThe assistant answers without its documentsAmazon Bedrock · 90 min · level 5
- DataThe nightly data refresh stallsS3 · 90 min · level 5
- DataOrder writes cannot reach the databaseLambda · 90 min · level 5