Use web analytics when you are optimizing acquisition, evaluating content, or measuring marketing spend. Use product analytics when you are prioritizing features, diagnosing low adoption, running A/B tests inside the product, or presenting retention metrics to investors. The two sets of questions overlap at the activation boundary — the moment a visitor becomes a user — which is why that handoff point deserves instrumentation in both systems.
Teams that keep these in separate tools often lose the activation story entirely. When the web layer and the product layer share an ingest endpoint and a common user identifier, the activation funnel becomes continuous: you can follow a user from their first marketing touch through onboarding, first value moment, and long-term retention without manually stitching exports.
AIOProductOS captures both first-party on one spine, sharing identifiers with the customer and revenue records. The funnel stays continuous from the first marketing touch to the account's current MRR, and a churned cohort reads as one story: what they paid, what they asked for, and which features they never activated. That is a question about a single record rather than a reconciliation of three exports.