Performance is often treated as a technical afterthought, but users experience it as product quality. A slow interface communicates friction before content is even read.
Core Web Vitals matter because they align with real behavior: delayed rendering hurts trust, unstable layouts cause mistakes, and lagging interactions increase abandonment.
Commercial pages benefit the most from speed discipline: service pages, lead forms, and pricing sections should be optimized first because they directly influence conversion.
A practical approach is performance budgeting: define maximum script weight, image targets, and interaction thresholds before launch, then monitor regressions every sprint.
Teams that operationalize performance early gain both SEO resilience and better paid traffic efficiency, because faster pages convert more of the same traffic volume.