A logo is a visual mark that helps people recognize a company, group, or product. It is like the symbol on a familiar package that lets you spot it on a shelf.
Websites often place a logo near the top of the page. It may also link back to the site's home page. If the logo is an image, people who cannot see it still need a useful text description or an accessible name.
Use the approved version consistently and keep it clear at small sizes. A logo identifies the brand, but it should not replace words that explain what the page does.