How does the noindex value in the robots metadata affect a web page?

The noindex value in the robots metadata prevents search engines from indexing the page.

When the noindex value is used in the robots metadata, it instructs search engines not to include the page in their index. This means the page will not appear in search engine results, which can be useful for pages that are not intended for public visibility or are under development.

<meta name="robots" content="noindex">