Do I need a data warehouse before hiring an AI Data Analyst?
No — the AI Data Analyst starts with whatever you have. Most one-person companies begin with just PostHog events, Stripe, and a Postgres read replica. The AI runs SQL against those directly. When data volume justifies it (usually past 50K events/day), the AI will flag that a warehouse would unlock deeper analysis and recommend BigQuery or Snowflake with a proposed ETL setup. Starting small avoids the 6-week warehouse setup project that kills the data initiative before it produces any insights.