The document discusses building a first app using MongoDB Atlas and Stitch. It introduces MongoDB as a document-oriented database and MongoDB Atlas as a fully managed cloud database. MongoDB Stitch is described as a serverless platform that makes it easy to build apps on top of MongoDB. The presentation explains how Atlas and Stitch allow developers to focus 80% of their time on building features rather than managing infrastructure. It then demonstrates a live coding example of building a basic blog app with user authentication and comments using Atlas and Stitch.