SEO metrics matter when they answer a business or diagnostic question. Start with outcomes: qualified leads, sales, revenue, or other key events attributed to organic search where measurement is reliable. Pair totals with conversion quality and margin so growth in visits is not mistaken for growth in value. Search Console provides Google Search evidence such as clicks, impressions, CTR, and average position. Use these to identify pages and queries that gained or lost visibility, while remembering that data is delayed, rare queries can be omitted, and table rows are limited. Average position is an aggregate, not a fixed rank for every user. Analytics describes measured on-site behavior and conversions. Landing-page sessions, key events, funnel progress, and ecommerce results can reveal where organic visitors succeed or encounter friction. Bounce rate or time on page may prompt investigation, but neither should be presented as a confirmed Google ranking signal or definitive proof of search-intent mismatch. Technical metrics are diagnostic. Page indexing reasons, server errors, crawl patterns, canonical consistency, structured-data validity, and Core Web Vitals can help teams find access, interpretation, or experience problems. Third-party link and authority metrics are useful for comparison but are not Google scores. Choose a small set tied to decisions, segment it by landing page and intent, and compare meaningful periods. Avoid invented index ratios or traffic-growth thresholds. The right metric tells a team whether SEO is producing valuable outcomes or which specific problem to investigate next. Turn the metric or tool into a documented decision: state the business question, source, scope, date range, limitations, and action it supports. Compare first-party evidence with operational outcomes where possible, and revisit the result after enough time has passed to observe change. This prevents an estimate, aggregate, or diagnostic warning from being mistaken for a Google score, causal ranking factor, or guaranteed business result.