Which Appian component allows users to interact with and modify data in a grid format?

The a!gridLayout component is designed specifically for creating user interfaces that allow for interaction with and modification of data displayed in a grid format. This component is integral for applications where users need to view and manipulate sets of data, such as adding, editing, or deleting records directly within the grid. The grid layout provides a structured way to display data, improving usability and allowing end users to perform operations easily.

In the context of other components, while a!gridView is also related to displaying data, it is primarily for viewing data rather than direct interaction and modification. The a!dataType component is focused on defining data structures within Appian, and a!tableLayout is used for displaying tabular data but lacks the interactive features that a!gridLayout offers. Thus, for scenarios requiring a dynamic interface for data management in a grid format, a!gridLayout is the most appropriate choice.