What is the purpose of 'Layout' in a page?

What is the purpose of ‘Layout’ in a page?

Layout defines how the page is divided into ROWS and COLUMNS. Its design is completely
dynamic, configurable and customisable.

Layout is a pattern (or framework) that defines a web application structure. It has the role of
structuring the information present on a site both for the website’s owner and for users. It
provides clear paths for navigation within web pages and puts the most important elements
of a website front and center.