The Hosting Lexicon

A glossary and short history of web hosting

Lexicon

What is a staging site?

The short version

  • A staging site is a practice copy of a website. It is used to test changes before visitors see them.
  • The live site, also called production, is the one visitors use.
  • A change often goes from development to staging to production.

Environments

An environment is a place where a site's software runs. Bigger projects use more than one.

The place where changes are first made is the development environment. The place visitors use is the production environment. In larger projects the two are kept apart, often with several stages in between.[1]

Three boxes in a row joined by arrows. Development, where changes are made. Staging, where changes are tried out safely. Production, where visitors see the site. A note says visitors only see the last box.
A change usually passes through development and staging before it reaches production.

Staging

A staging environment is a place for testing that closely copies the production environment.[1]

Think of a dress rehearsal. The cast wears the costumes and uses the real stage, but no audience has come yet.

Two boxes side by side. The left box, the staging copy, has the same set-up as the live site, is where updates are tested, and hides mistakes from the public. The right box, the live site, is the public address that visitors use, where mistakes show at once. An arrow points from staging to live.
A staging copy lets you test a change before the live site gets it.

Testing comes first

Before staging, a change often goes to a test environment. Its purpose is to let human testers try new and changed code, using automatic checks or by hand.[1]

Staging is the last rehearsal after that. If the change passes there, it can be applied to the live site with more confidence. If it fails, the live site is untouched, and the problem can be fixed in private.

Small sites often skip these steps and change the live site directly. That is quicker, but any mistake shows to visitors straight away.

How close a copy is it?

Staging aims to mirror the real production set-up as closely as it can.[1] It may even connect to some production services, such as databases.[1]

That is why a mistake there can still matter. A staging copy is safe for visitors, but it is not always cut off from everything real. Check how a given set-up is built before you trust it.

What staging is for

Staging is mainly used to try out set-up and moving steps before they are applied to the live site.[1] That includes updates and changes to settings.

Some organisations also use staging to preview new features for chosen customers.[1]

Why hosting plans mention it

Some hosting plans advertise a staging feature. Each host words its feature differently, so the plan's own description is the place to check what it does.

Origin: the live environment is also called "production".[1]

See also: Managed hosting · Snapshot · Migration.

Sources

  1. Deployment environment, Wikipedia (accessed 2026-10-28)