Model-View-View-Model (MVVM) is an architectural pattern originally developed by Microsoft. It helps to abstract or separate the client-side (GUI) development from the server-side (data model). The view model is an abstraction of the View and represents the state of data in the Model. With JHipster, you can choose between Angular, React, and Vue.js as the client-side framework.
There is also an official JHipster Vue.js blueprint (https://github.com/jhipster/jhipster-vuejs) if you would like to use Vue.js as the client-side framework. We will have a dedicated section regarding this later in the book.
We'll take a look at Angular, React, and Vue.js in the next sections.