This lab is designed for CCIE Collaboration aspirants for hands-on learning of new topics added in the CCIE Collaboration lab exams. Most products in Cisco's collaboration portfolio come with a rich set of Application Programming Interfaces (API's) that allow customers to extend the functionality and capabilities of the products to better suit their business needs. This lab will provide an overview of the various API's available across the Cisco Collaboration portfolio, focusing on specific use cases of how these APIs can be used to solve real world problems. This lab will focus on the APIs of Webex Calling. Participants will use APIs to deploy a Webex Calling Location, Setup PSTN and license a user. Showcasing a realtime use case.