What is the Adobe Marketing Cloud?
The Adobe Marketing Cloud provides a set of products to measure, optimize and automate your marketing processes. These products can be integrated with other systems and services programmatically by using the products' APIs.
The Developer Connection provides a place to find documentation and discuss these APIs.
The Developer Sandbox provides a fully-operational testing environment for Adobe SiteCatalyst, DataWarehouse, Genesis, and all associated APIs. Dev Center provides an administrative functionality for the Sandbox as well as the means for 3rd-party developers to create integrated products which can be distributed to Marketing Cloud customers through the Genesis infrastructure and interface.