11.7Practical Implementation Steps

Step 1: Measure Before You Set Targets

Before defining SLOs, measure your current performance for 30 days. Your initial SLO should be set at or slightly above your current baseline -- not at an aspirational target.

Step 2: Start with One Service

Pick your most critical service (usually the one that generates revenue) and define 2-3 SLOs. Prove the process works before expanding.

Step 3: Automate Budget Tracking

Manual error budget tracking does not scale. Use Prometheus recording rules or your monitoring platform's SLO feature (Datadog SLOs, Grafana SLO).

Step 4: Tie Budget to Actions

The error budget policy must have teeth. If the budget hits 25% and the policy says "feature freeze," leadership must enforce it. Otherwise, the entire system loses credibility.

Step 5: Review Quarterly

SLOs are not permanent. Review them quarterly:

• Are they too tight? (Constant feature freezes = targets too ambitious)
• Are they too loose? (Never consume budget = targets not meaningful)
• Do they reflect user expectations? (User complaints with green SLOs = wrong metrics)