New Relic helps cloud migration by identifying application dependencies quickly and efficiently through five key steps: identifying applications and components, installing New Relic agents, mapping and assessing dependencies, spotting unknown dependencies, and performing an infrastructure inventory. By using these steps, users can reduce the risk of missed interdependencies causing outages or complications during a cloud migration project. The process involves collecting data on application availability and external services, creating visual summaries of application dependencies, and identifying connections between applications and external services. New Relic's Service Maps feature provides a starting point to plan a cloud migration by defining upstream and downstream dependencies, while the infrastructure inventory helps identify software packages installed on servers and their configuration data. By leveraging these tools and insights, users can make better decisions about cloud infrastructure and migrate more quickly with confidence.