FDEInterviews logo
← System Design & Production Engineering / 78
hardNewSierraDecagonIntercom

Your customer-support agent is going to production next month. Define its SLOs, its error budget and what happens when the budget runs out.

Uptime and latency are the easy SLIs. The hard ones are whether the case was actually resolved, which you only learn days later, and what to do with an action that must never happen, which no error budget should cover.

Updated Oct 2026 · Grounded in real Forward Deployed Engineer interview loops and written to a senior-engineer editorial bar.

Uptime and latency are the easy SLIs. The hard ones are whether the case was actually resolved, which you only learn days later, and what to do with an action that must never happen, which no error budget should cover.

20 answers per topic instead of 10, plus saved progress and bookmarks · no cardor unlock all 543 remaining answers · ₹2,000 / $25

Every answer, concept and course, all published video lessons, hands-on FDE Lab missions, Premium PDF guides and companion files, the full practice-test bank and work-sample downloads. Referral Premium excludes guide PDFs and their companion files.

6 months · One payment · No auto-renewal

Study alongside free video lessons.

UP NEXT ON YOUR JOURNEY
DISCUSSION · 0

No comments yet — be the first to share your approach.