Apollo GraphQL

Apollo GraphQL builds open-source and commercial GraphQL technologies and an API orchestration platform that unifies disparate APIs into a composable graph. Its tooling spans the GraphQL stack: Apollo Server for building GraphQL APIs, Apollo Client for state management in GraphQL applications, and the GraphOS Router, a high-performance runtime for GraphQL API execution. The open-source projects have recorded over 1 billion downloads.

The commercial offering centres on Apollo GraphOS, a platform that composes APIs into a single graph and provides enterprise-grade security and governance for teams querying data across systems. Apollo Connectors extend this with declarative REST-to-GraphQL orchestration, allowing existing REST services to be folded into the graph without hand-written resolvers. Apollo MCP Server connects AI agents to those same APIs via the Model Context Protocol, extending the infrastructure into agentic AI.

Technical work covers GraphQL runtimes and routing, API management, developer tooling, state management and REST-to-GraphQL integration, alongside growing involvement in AI agent infrastructure. The engineering culture is developer- and open-source-oriented, with an emphasis on declarative, graph-based approaches to building software and on enterprise-grade security and governance. Customers include Airbnb and Ticketmaster, across web and mobile application development and enterprise digital transformation. The company is headquartered in San Francisco.