Field + lab baselineKey URLs, device split, LCP element, long tasks, layout-shift sources and supporting server timings.
Prioritised engineering planIssues ranked by expected impact and effort, with low-risk wins separated desde architectural work.
Staging implementationTheme, plugin, asset-loading, image, font and server-side changes tested away desde production.
Verificación en producciónSame-URL before/after checks plus notes on what still depends on the next CrUX refresh.
Regression notesA short runbook for tags, plugins, campaigns and templates most likely to undo the gains.
Clear limitsIf hosting, a third-party vendor or design constraint caps the result, you get that answer before unnecessary work.