What is the primary purpose of a Single Page Application (SPA) in Liferay?

The primary purpose of a Single Page Application (SPA) in Liferay is to dynamically update a single HTML page as the user interacts with the application. This design allows for a smoother user experience, as it reduces the need for full-page reloads. Instead, SPAs leverage JavaScript to load and display content dynamically, providing instant feedback and improving the responsiveness of the application.

When users interact with an SPA, such as clicking buttons or submitting forms, only the relevant components or data on the existing page are updated. This leads to a more seamless experience, akin to a desktop application, where interactions feel fluid and quicker. The architecture of an SPA is particularly effective in modern web development, as it allows for faster performance and reduced server load since less data is transmitted with each interaction.

In contrast, the other options don't accurately reflect the core functionality of SPAs. Loading multiple HTML pages simultaneously could detract from the SPA approach, which focuses on a single page. Increasing server-side processing does not align with the typical benefits of SPAs, as they aim to offload processing to the client side. Lastly, while limiting user interaction is counterproductive to the intent of an SPA, which is to enhance interactivity and engagement.