Planning datacenter migrations can involve thousands of workloads and tens of thousands of servers and are often deeply interdependent. Application discovery and dependency mapping are important early first steps in the migration process, but difficult to perform at scale due to the lack of automated tools. AWS Application Discovery Service (AWS ADS) is a new service (COMING SOON) that automatically identifies on-premises applications and dependencies, and baselines application health and performance to help plan your application migration to AWS quickly and reliably. This talk introduces the new Application Discovery Service capabilities for streamlining data center and large scale migrations to AWS. We will discuss how ADS works together with your existing on-premises infrastructure to inventory applications and identify dependencies. You will leard how you can query ADS to examine the applications, their attributes, and dependencies, and then use this information to help reduce the time, cost, and risk of migrating applications to AWS by natively integrating with AWS services designed to simplify application monitoring and management.