Layout Builder is the new module in Drupal core since the version 8.7. It brings a powerful and easy way for site builders to control the layout of the main content area of a Drupal page.
It is a huge step up for Drupal when competing with website builders for winning Site Editor's favor in taming the confusing coupling of content and its design. Many other features can be built on top of it to create a truly remarkable editors’ and content creators’ experiences.
This article shows what Layout Builder provides out of the box for changing the layout of your page content area.