What aspect of OutSystems innovation focuses on speed and reusability?

The aspect of OutSystems innovation that focuses on speed and reusability is mobile patterns. Mobile patterns are pre-built templates and components that are designed to accelerate mobile application development. They allow developers to implement common functionalities and design standards quickly, reducing the time spent on repetitive tasks and enabling faster prototyping and deployment.

Mobile patterns encapsulate best practices and provide a consistent user experience across applications, making them highly reusable. By using these patterns, developers can leverage existing work rather than starting from scratch, which enhances productivity and accelerates the development lifecycle.

Other options, while important in the OutSystems environment, do not have the same emphasis on speed and reusability. Entities refer to data structures within the application that define how data is stored. Actions are individual functions or methods designed to perform specific operations, while aggregates are used for retrieving and manipulating data sets. These elements contribute to the overall development process but do not specifically address the innovative aspect of rapid development and reusability as effectively as mobile patterns.