I am having so much benefit from using this pattern in last few years, I can’t help myself. I have to try and persuade all of you to use it too.
Replicating UITabBarController behavior using Coordinators flattens your UI hierarchy and thus considerably simplifies controller transitions
Expanded transcript from my talk at NSSpain 2017
Taking the first step towards clean and minimal app architecture in iOS app means freeing your view controllers from the burden of dealing with other controllers.