The image shows a typical web page with indicative text on it to indicate regions that are compatible with WAI-ARIA landmarks.
The top left of the page contains the App Name and the logo. Text indicates this is where role = banner. Below that and to the right are tabs for navigation. Text indicates this is where role = navigation.
The central area of the page has a title and body text. Text indicates this is where role = main. Below the main area is the footer with links. Text indicates this is where role = content info.