Which component manages requests sent to ArcGIS Server?

The component responsible for managing requests sent to ArcGIS Server is the ArcGIS Web Adaptor. It acts as a bridge between web applications and the ArcGIS Server, allowing users to access map services, geocoding services, and other GIS functionality hosted on the server. By routing incoming requests to the appropriate services, the Web Adaptor enhances the security and scalability of the server architecture.

Furthermore, the ArcGIS Web Adaptor simplifies the handling of requests, supporting various authentication methods and ensuring that users can access resources seamlessly. It plays a crucial role in efficiently managing and balancing the workload on the ArcGIS Server, which is essential for maintaining performance and reliability in GIS applications.

The other components mentioned serve different functions: the ArcGIS Data Store primarily manages data storage and backup for hosted services, Portal for ArcGIS is the platform for sharing maps and applications, and ArcGIS Online is a cloud-based mapping platform that allows users to create, share, and analyze data online, but does not directly handle requests to the ArcGIS Server itself.