Adobe Experience Platform (AEP) is a cloud-based solution that allows businesses to collect and manage customer data across various channels and touchpoints. AEP Connection Sources refer to the different types of data sources that can be connected to the platform to collect customer data.

The sources catalog is divided into several categories, including:
- Adobe Experience Cloud: This category includes various Adobe solutions, such as Adobe Analytics, Adobe Target, Adobe Campaign, and more. These solutions can be connected to AEP to collect real-time event data, as well as customer profiles and other types of data.
- Batch Sources: This category includes various types of batch data sources, such as flat files, databases, and data warehouses. These sources can be used to import large sets of data into AEP at once, such as historical transaction data.
- Streaming Sources: This category includes various types of streaming data sources, such as IoT sensors, social media feeds, and more. These sources can be used to capture continuous data streams in real-time.
- Third-Party Sources: This category includes various third-party data sources, such as data management platforms (DMPs), customer relationship management (CRM) systems, and more. These sources can be connected to AEP to combine external data with the business's own data to gain a more complete view of their customers.
In addition to these categories, the sources catalog also includes various connectors and integrations, such as API connectors, SDKs, and more, which allow businesses to connect to custom data sources or build their own data collection solutions.
Overall, the sources catalog in AEP provides businesses with a wide range of data collection options to meet their specific needs and requirements.