Is Apollo GraphQL free?
Apollo Client and Apollo Server are open source and free. Apollo Studio has a free tier. Apollo Enterprise has custom pricing for advanced features.
What is Apollo GraphQL?
Apollo provides tools for building GraphQL applications. Apollo Client for frontend, Apollo Server for backend, Apollo Studio for schema management and observability.
What is Apollo Federation?
Federation lets you compose multiple GraphQL services into one unified graph. Each team owns their part of the schema. Essential for large-scale GraphQL architectures.
Apollo Client vs Relay?
Apollo Client is more flexible and easier to learn. Relay (by Facebook) is more opinionated with better performance for specific patterns. Apollo is more popular.
What is Apollo Studio?
Apollo Studio (formerly Engine) provides GraphQL observability: schema registry, performance monitoring, error tracking. Free tier available. Essential for production GraphQL.