Calculate a simple migration error budget and use it to guide release or pause decisions.
The loyalty API serves 30 days of customer traffic. Product wants full cutover, operations wants zero risk, and no one has translated reliability into a migration threshold. Error budget: SLO target defines how much unreliability the team can spend The common trap is demanding 100 percent reliability while also demanding fast migration. That creates hidden risk negotiations instead of explicit tradeoffs. Define SLO Set the service target: 99.9 percent successful loyalty API requests per calendar month. The SLO must reflect user experience. Server uptime is weaker if customers can still fail checkout or rewards lookup. Calculate budget A 99.9 percent…
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