Sure, Apollo Server is awesome.

But have you considered these open source alternatives?

They are free, self-hostable and community-driven.

Check by yourself: GraphQL Hive , GraphQL Mesh .

So is GraphQL Hive

Open-source GraphQL management platform
★ 490 GraphQL API gateway License: MIT
Prevent breaking changes, monitor performance of your GraphQL API, and manage your API gateway.

Read more about GraphQL Hive
So is GraphQL Mesh

A GraphQL gateway of aggregated data sources
★ 3.5K GraphQL License: MIT
GraphQL Mesh is a GraphQL Federation framework and gateway for both GraphQL Federation and non-GraphQL Federation subgraphs, non-GraphQL services, such as REST and gRPC, and also databases such as MongoDB, MySQL, and PostgreSQL.

Read more about GraphQL Mesh