True or False: Appian interfaces automatically employ a "write once, deploy anywhere" approach to ensure you do not have to build separate interfaces to test on various devices.

The assertion that Appian interfaces automatically employ a "write once, deploy anywhere" approach is correct. In Appian, interfaces are designed to be responsive and adaptive, meaning that they can adjust their layout and functionality based on the device being used, whether it’s a mobile device or a desktop. This capability significantly streamlines the process of interface development, allowing developers to create a single interface that delivers an optimal experience across different platforms without needing to create separate versions for each device.

This approach not only enhances efficiency in development but also reduces the complexity of managing multiple versions of the same interface, ensuring consistency in user experience across devices. The responsive design ensures that elements are appropriately resized, rearranged, and made accessible according to screen size and orientation, which aligns with modern web standards.

The other choices suggest limitations or conditions under which the "write once, deploy anywhere" principle might apply, which do not reflect the comprehensive capability of Appian interfaces. Appian is built to cater to both mobile and desktop experiences seamlessly, reinforcing the idea that a single implementation can effectively serve multiple environments.