A clickable connection that takes you from one webpage to another. Like a doorway or bridge that connects different rooms in a digital building.
When you click a blue underlined text on a webpage, that link takes you to a different page or website.
A "link" (hyperlink/URL) is a web standard, not a cloud-provider service. All cloud platforms host web apps and documentation that use links, but none has a single service called "Link" for basic webpage navigation.