I think the GP is referring to Apollo Client 2's ability to abstract over the underlying data source. Their intro blog post for the 2.0 announcement gives a good overview: https://dev-blog.apollodata.com/apollo-client-2-0-5c8d0affce...
Re:How GraphQL Replaces Redux
by dbetteridge on Tuesday March 13, 2018 @06:30PM
(#16580462)
I think they're referring to writing your server-side resolvers, there is no difference between requesting data from a database you own vs an API
> You can combine multiple data sources into a central datastore using GraphQL (REST APIs + DB queries etc.., that's one of the major benefits of it.
Would love to see the docs on this because I have yet to find it!