Which type of applications particularly benefit from the "Visually complete" metric?

The "Visually complete" metric is especially beneficial for Single Page Applications (SPAs) due to the nature of how these applications are built and interact with users. SPAs load content dynamically without refreshing the entire page, which can create user experience challenges regarding how quickly users perceive the application as being "complete."

In SPAs, the user expects a seamless experience where content is updated in real-time. Therefore, the "Visually complete" metric provides a crucial insight into when the user can see and interact with the initial content without waiting for the entire application to fully load. This metric helps developers optimize the rendering of UI components so that users have feedback on their actions, significantly improving perceived performance and user satisfaction.

While other types of applications may use the "Visually complete" metric, SPAs are uniquely positioned to benefit from it due to their reliance on dynamic content loading and the requirement for quick, user-friendly interfaces. Static websites, Bootstrap websites, and Content Management Systems may have different metrics that are more pertinent, focusing on overall load times rather than the specific user interface perception that "Visually complete" addresses in the context of SPAs.