Which of the following is NOT a mode available when viewing a page in AEM?

In the context of Adobe Experience Manager (AEM), the modes available for page viewing are designed to cater to different user roles and functions within the platform. Scaffolding, Developer, and Layout modes are well-defined within AEM's interface.

Scaffolding mode is often used for content authors to build and structure the framework of a page, while Developer mode provides a workspace tailored for developers to work on integrating and customizing components and templates. Layout mode focuses on visualizing the arrangement and design of page elements, allowing users to see how content will appear to end users.

On the other hand, 'Customer' is not a recognized mode in AEM. This suggests that the term does not refer to a specific functionality or viewing mode within AEM's operational environment, and thus is not applicable as a standard mode for viewing pages. The use of the term 'Customer' may imply a focus on end-user interactions, but it does not correspond to a viewing mode available in AEM for content authors or developers.