Common terminology used in web development.

Isomorphic

Isomorphic code (aka universal code) is code that can be loaded and executed on both the client- and server-side.

HMR

HMR (Hot Module Replacement, aka live reload) is a development feature that updates modules in a running application without requiring a full page reload, preserving application state.

See also: Vite > Why Vite > Slow Updates.

SPA

SPA (Single Page Application) refers to rendering the page exclusively on the client-side (in the browser), see:

• What is SSR and SPA?
• Guides > SSR vs SPA

The term SPA has become a misnomer, see:

• What is SSR and SPA? > SPA is a misnomer

See also:

• SSR
• SSG

SSR

SSR (Server-Side Rendering) refers to rendering the page to HTML on the server-side and then hydrating them (making them interactive) on the client-side, see:

• What is SSR and SPA?

The main motivation for doing SSR is to improve SEO and AI discovery (it makes your page's content available to the crawlers of AI and search engines), see:

• Guides > SSR vs SPA

See also:

• SPA
• SSG

SSG

SSG (Static Site Generation, aka pre-rendering) is a web development approach where all pages are pre-rendered to HTML at build time, so that your app consists only of static assets that can be deployed to a static host which is fast, easy, and inexpensive (usually free), see:

• Guides > Pre-rendering (SSG)

See also:

• SSR
• SPA