AEM works with Adobe I/O, which at its core is what type of system?

Adobe I/O is primarily recognized as an identity management system that facilitates seamless integration between various Adobe services and third-party applications. It enables secure access to APIs, services, and resources within the Adobe ecosystem, ensuring that users and applications can authenticate and maintain identity consistently across platforms.

This identity management aspect is crucial for managing user access and permissions, which is especially important in environments using multiple Adobe products, such as AEM. By providing a centralized mechanism for identity management, Adobe I/O helps establish secure and efficient interactions between services, thus supporting collaboration and data sharing while also maintaining security protocols.

In the context of the other options, a content delivery network primarily focuses on distributing content efficiently to end-users, which is not the core function of Adobe I/O. A data visualization tool is specific to interpreting and displaying data visually, and while Adobe offers such tools, they are not part of Adobe I/O's primary functionality. Lastly, a cloud storage service pertains to the storage of files and data in the cloud, which again does not align with the identity management and API accessibility focus of Adobe I/O.