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Try one FDE decision.

FDEs turn a customer symptom into evidence, a safe fix, and a clear update. This short preview shows the first step; an account saves a personalised path afterwards.

1. Role
2. Worked example
3. Your decision
4. Feedback

Customer update

“Our API works locally but fails after deployment.”

A useful FDE loop is: understand symptoms → inspect the system → test a hypothesis → fix and verify → explain the outcome.

HTTP GET /orders → 401 Unauthorized
local request → 200 OK

What would you do first?

Inspect the deployment logs and environment configuration.Redeploy the same build until the error disappears.Rewrite the API client before checking the running service.