So more an inquiry, what SST constructor do we have that handles PUB/SUB requests? (outside of GraphQL if possible)

Don't even think SST's constructs have any graphql helpers for the subscription resolvers. But it depends what exactly you want from the pub/sub. Theres a 2 main ways for pub/sub • Topic: https://docs.serverless-stack.com/constructs/Topic • EventBus: https://docs.serverless-stack.com/constructs/EventBus Or theres Queue (not pub/sub but rather polling) https://docs.serverless-stack.com/constructs/Queue