Through a number of searches over the last few days regarding application modularisation with Rails, I found extensive material on Engines in Rails 3.x, but practically nothing about Rails 4. I asked for references to a friend and he told me in version 4 of the framework, the modularization must be done exclusively through gems . I found it rather absurd, given the apparent ease that engines provide.

Question:

In Rails 4 does the use of engines take place in the same way as its previous versions (3.x)?