Pinecone is a fully managed vector database designed to store, index, and query high-dimensional vector embeddings at production scale. It provides low-latency similarity search across billions of items via simple API calls and SDKs, enabling retrieval-augmented generation, semantic search, recommendation systems, and other embedding-based workflows. Pinecone exposes REST and gRPC endpoints with public OpenAPI specifications, integrates with RAG frameworks and developer tools, and focuses on scalability, reliability, and production-ready operations for knowledge-centric AI applications.