Работа с Compositional Layout в UICollectionView

Очень простое объяснение

In this article, I’ll be demonstrating how easy it is to create an orthogonal scrolling page by using UICollectionViewCompositionalLayout. We will have a detailed look of the view hierarchy to learn the core concepts of modern collection view in iOS 13, and build an orthogonal scrolling collection view step by step.

https://betterprogramming.pub/super-easy-compositional-uicollectionviews-in-swift-f0fa6a2c108d