Using connectors in Power Apps primarily serves the purpose of connecting to various external data sources. Connectors act as bridges that allow your app to interact with different data sources, such as SharePoint, Microsoft 365, SQL Server, and numerous third-party services. This capability is essential because it enables users and developers to build applications that can pull in and work with data from a variety of origins, facilitating a more integrated and functional user experience.
While enhancing app aesthetics is important for user engagement, it does not involve the core functionality that connectors provide. Similarly, managing user permissions is not directly related to the role of connectors, as that function is typically governed by security roles and access controls separate from data connections. Automating database backups also falls outside the responsibilities of connectors; rather, it relates to database management practices that ensure data integrity and availability. Therefore, the primary and most relevant function of connectors is indeed to establish connections between Power Apps and external data sources.