https://mattepaint.com/academy/tutorial/advanced-modelling-techniques/

In this part, Nikola raises the bar for modelling environments to new heights with Advanced modelling techniques and procedural modelling! Learn how to dynamically distribute windows, air conditioners and other props along a building as well as how to randomize each floor of a building for an organic and realistic final model. These skills are limited only by your imagination. With them, you'll be able to model near infinite levels of detail and have all your variations updated immediately!