BackendFrontendHigh signalAround since 2019
GraphQL Federation
Also written as Apollo Federation, Apollo GraphQL, Apollo, Supergraph
Combining several teams' GraphQL services into one unified API (a 'supergraph'), so frontend apps query a single endpoint while each team owns its own part. Apollo is the main vendor.
Think of it like
One reception desk for a building full of separate companies: visitors ask once and get routed to the right office.
Junior or senior?
A large-organisation GraphQL signal, well beyond basic GraphQL use.
Senior sounds like
Talks about schema ownership across teams and performance of cross-service queries.
Ask them
“How did teams coordinate changes to the shared schema without breaking each other?”