High-level SLOs can mask critical reliability gaps; planned maintenance must be separated and reliability segmented to ensure all users are truly covered.
Maintenance Windows suppress planned downtime from SLI calculations, and Facet Service Level Compliance breaks compliance down by attributes to pinpoint localized reliability issues.
The Five Biggest Mistakes Organizations Make When Implementing SRE - DevOps.com
SRE adoption fails when organizations treat it as tooling or org changes instead of a sustained cultural and engineering accountability transformation.