What’s a Single-Page App? | jakelazaroff.com

Okay, let’s define the extrema of each axis:

• Server-side rendering (SSR) is when HTML is produced on a server and sent to the browser.
• Client-side rendering (CSR) is when HTML (or some other representation, such as the result of a JSX transform) is produced on the client and applied to the DOM.
• A multi-page app (MPA) is when a hyperlink click or form submission results in the browser replacing the current page with an entirely new document.
• A single-page app (SPA) is when the browser never replaces the page with a new document, and instead makes all changes through client-side DOM manipulation.

Source: What’s a Single-Page App? | jakelazaroff.com