What feature allows for easy sharing of content across applications in Liferay?

The feature that facilitates easy sharing of content across applications in Liferay is Asset Libraries. Asset Libraries are designed to enable users to organize, manage, and share various types of content or assets—such as documents, images, and videos—across multiple sites and applications within the Liferay ecosystem. This centralized approach allows different applications to access and utilize shared assets without duplicating content, thereby promoting efficiency and consistency in content management.

Unlike custom plugins, which may be tailored for specific functionalities within a single application, Asset Libraries provide a more universal solution for managing content across diverse applications. User-specific content libraries are focused on individual user needs, limiting the ability to share content broadly across the platform. Data abstraction layers serve a different purpose, mainly focusing on the backend and data management rather than the sharing aspect of content within applications. Thus, Asset Libraries stand out as the optimal feature for cross-application content sharing in Liferay.