In working with developers wanting to integrate with Eloqua, I am often asked if there is an official Eloqua SDK.


While there is not an official implementation of a SDK, we do have an ever-growing set of resources to assist in developing on the Eloqua platform.


There is a guide located here Building On The Eloqua Platform - A Resource Guide which contains links to code samples, How-Tos, and other useful information.  As more resources become available, they will be added to the guide.


There is also a newly developed Eloqua PHP Client, that should help those using PHP, and the Eloqua SOAP API documentation can be found here.


Also, the Topliners community in general is a great resource for developers.  In the Eloqua API group for example, there are many valuable discussions about API development issues and best practices.