I'm not sure I have a clear understanding of the question, but you do need to use @apollo/gateway to declaratively compose your implementing services together. However, you don't need to use @apollo/federation to create your implementing services. Apollo lists third-party support for creating federated GraphQL schemas here: apollographql.com/docs/apollo-serv...
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I'm not sure I have a clear understanding of the question, but you do need to use @apollo/gateway to declaratively compose your implementing services together. However, you don't need to use @apollo/federation to create your implementing services. Apollo lists third-party support for creating federated GraphQL schemas here: apollographql.com/docs/apollo-serv...