Chat GPT - One More App to Probabilistic Between?

In the book, we talk about breaking apps down into microservices or tasks. Like what does this app do exceptionally well? What are the functionalities that can become part of an ecosystem of other functionalities? They're not. It's like the very existence of the app is really what's holding people up in a way. Probably Microsoft will add chat GPT as part of their office suite - which to me is almost gone with gold.