How to Measure Organic Performance Before and After Combining Websites
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How to Measure Organic Performance Before and After Combining WebsitesMeasuring a website combination requires more than comparing total organic sessions before and after launch. The analysis should account for seasonality, changes in content, URL structure, brand demand, and the migration itself.
1. Establish a Pre-Migration BaselineCapture organic clicks, impressions, sessions, conversions, revenue, rankings, indexed pages, and top landing pages for both sites.
2. Segment the DataBreak performance down by domain, template, topic, URL, device, country, and conversion type where data permits.
3. Track the Migration DateRecord the exact launch and major follow-up deployment dates so changes can be associated with specific events.
4. Compare Equivalent PeriodsUse appropriate year-over-year or seasonally comparable periods when possible rather than relying only on immediate week-over-week comparisons.
5. Measure URL-Level ChangesIdentify which old URLs retained traffic, which declined, and which new destinations gained traffic.
6. Analyze Redirect PerformanceCheck whether important legacy URLs redirect directly to relevant final URLs and whether unexpected chains or errors exist.
7. Measure Search VisibilityCompare impressions, clicks, rankings, and query coverage before and after consolidation.
8. Measure Business OutcomesTrack leads, purchases, subscriptions, revenue, and qualified conversions rather than treating sessions as the final KPI.
9. Account for External FactorsSearch demand, seasonality, algorithm changes, market changes, and promotional activity can influence the results independently of the migration.
10. Build a Recovery AnalysisIf performance declines, identify affected URL groups, templates, topics, and redirects before deciding which changes require remediation.
ConclusionPost-acquisition measurement should compare the combined site's performance against a carefully documented baseline. Analyze traffic, visibility, URLs, redirects, templates, and business outcomes separately so genuine migration effects can be distinguished from broader market changes.
