This article teaches developers how to build a robust and scalable serverless REST API using AWS Lambda functions, Fauna database, and TypeScript. To start, developers need to have prerequisites such as Node.js, AWS CLI v2, Serverless Framework, an AWS account, and a Fauna account. Next, they create a new project by running the `serverless create --template aws-nodejs-typescript` command, which scaffolds a lot of code for them. They also add dependencies such as `serverless-fauna` and `serverless-dotenv-plugin`. The article explains how to configure Fauna resources in the `serverless.yml` file, including specifying the database collection and secret key. Developers then write Lambda functions using the Fauna SDK to query and insert data into Fauna. Finally, they deploy their stack by running the `sls deploy` command and can clean up by running the `sls destroy` command. Throughout the article, it highlights the benefits of combining Fauna with the Serverless Framework, including reduced complexities, faster development, and scalability.