Multi-service · Difficulty 5 of 5 · 90 min
Valid sessions refused at the entry point
Signed-in users are turned away with authorisation errors even though they present valid credentials, and the failure spans several layers at once. A legacy handler and an old log destination also remain. Trace the live request path end to end and restore every layer it depends on.
Where the symptom shows: API Gateway
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-serviceCheckout workflows stall before they finishStep Functions · 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