GraphQL is one of those technologies that sounds amazing for mobile apps when you first hear about it, but is it something you should be using? Let Chris Downie and Sam Landfried tell you about their experiences with it in this three part article (1, 2, 3).
Benoit Pasquier talks a lot of sense in this article on app architecture. Of course every app is different and what works well for a small app probably won't scale up to a huge one. The same conclusion was made in this week's episode of Swift by Sundell with Chris Eidhof and Matt Gallagher which is also worth a listen.
There were so many articles about this published this week (presumably as people started upgrading their apps to Swift 5 🚀) but I think the person who explained it best was Keith Harrison.