AWS Lambda empowers developers to build cloud-native web applications or platforms using microservices architecture. The three-tier web app has been a cornerstone architecture pattern for decades in this space. This session walks you through the process of identifying the presentation, logic, and data tiers required to build web applications with AWS Lambda at the core. By using AWS Lambda as your logic tier, you have a wide number of data storage options for your data tier. AWS offers a wide range of database services to fit your application requirements. We dive into methodologies for picking the right database technology based on your application requirements.