Symfony 4 bundles working

the logic for creating bundle doesn't change since Symofony 2.x. But now bundles are just packages, use for reusable features. If you want to develop your own bundle just follow this post Symfony2 - creating own vendor bundle - project and git strategy Since Symfony Generate Bundle isn't supported anymore in 4.x you have to follow this other post: Best Practices for Reusable Bundles