[sagichmal]

Sure, but that utility also carries massive costs: the infrastructure and tooling required to work with those schema definitions, especially as they change over time. It's certainly not the case that the benefits always, or even usually, outweigh those costs.

[ledauphin]

I disagree that tooling is required to work with them in the GraphQL case - you still end up getting and sending JSON in the vast majority of cases.

With gRPC you're absolutely correct. Then again, I wasn't trying to make an argument for or against any of these technologies per se - just pointing out that this is a major part of the value provided that wasn't really called out in the article.