Explain 'Access Control' in Appian.

Access Control in Appian refers to the mechanisms that restrict user permissions based on their roles or group membership. This feature is essential for maintaining the security of an application and ensuring that users can only access the data and functionality that they are authorized to use. By defining roles and permissions, developers can implement granular security measures, allowing them to safeguard sensitive information and comply with organizational policies.

In practical terms, Access Control helps in managing who can view, edit, or interact with specific components of an application, such as records, processes, or interface elements. It enables organizations to set up a secure environment where different users have tailored access that aligns with their job functions, preventing unauthorized access and ensuring that users engage with the application appropriately.

This structured approach to user permissions is vital in any software application where sensitive data and functionality must be protected from unauthorized interactions, thereby underscoring the importance of Access Control in Appian's architecture.