Full-stack web development is a comprehensive approach to web development that involves working on both the client-side and server-side of web applications. It requires a combination of skills and technologies including Google Auth, HTML, CSS, Advanced JavaScript, React.js, Node.js, Heroku, AWS S3 Bucket, AWS Setup, MongoDB Database, JavaScript, NPM, Mongoose, Express, Data Modeling, API Development, Backend Security, and more.

Google Auth is an authentication service that allows users to log in to web applications using their Google credentials. HTML, CSS, and advanced JavaScript are used to build the front-end of web applications, while Node.js and Express are used to build the back-end.

Heroku and AWS S3 Bucket are cloud platforms that allow developers to deploy and manage their applications easily. MongoDB is a popular NoSQL database used in backend development, and Mongoose is a library that makes working with MongoDB easier.

Data modeling and API development are essential components of full-stack web development, and backend security is critical to ensure that the application and data are protected from potential security threats.

By mastering full-stack web development skills, you can work as a full-stack developer, web application developer, or software engineer, and be able to build complex web applications from scratch.