The document discusses the migration process from Angular 1.x to Angular 2.0, highlighting the need to gradually update applications while enjoying the capabilities of Angular 2.0. It outlines steps such as restructuring modules, switching to TypeScript, and using Angular 1.5 components for a smoother transition. The author emphasizes that code from Angular 1.x can be adapted to resemble Angular 2.0, facilitating a dual-operation environment during the migration.