PlanetScale provides serverless MySQL with database branching (git-like workflows), automatic scaling, and AI-powered query insights. PlanetScale Insights uses ML to analyze query patterns, identify slow queries, and recommend optimizations automatically. Pricing changed significantly in 2024: eliminated free tier, usage-based pricing with reads ($1.50/million), writes ($1.50/million), and storage ($1.25/GB/month). Scaler Pro starts at $29/month with included usage. Database branching enables development workflows where schema changes are tested in isolated branches before merging to production—reducing migration risk. The platform handles MySQL connection pooling, read replicas, and sharding automatically. Boost feature caches query results at the edge for sub-millisecond response times. Non-blocking schema changes enable ALTER TABLE on large tables without locking. Page should cover: pricing model deep-dive, branching workflow tutorial, Insights AI recommendations, Boost caching configuration, comparison with Aurora and Cloud SQL MySQL, schema migration best practices, and pricing change impact analysis.