MongoDB Atlas is a fully-managed cloud database that handles all the complexity of deploying, managing, and healing your deployments on the cloud service provider of your choice (AWS, Azure, and GCP). MongoDB Atlas is the best way to deploy, run, and scale MongoDB in the cloud. With Atlas, you’ll have a MongoDB database running with just a few clicks, and in just a few minutes. With MongoDB Atlas, you can deploy, manage, and repair your installations on the cloud service provider of your choice without worrying about any of the hassles (AWS, Azure, and GCP). The best approach to deploy, run, and scale MongoDB in the cloud is with MongoDB Atlas.
It is a multi-cloud developer data platform. At its core is our fully managed cloud database for modern applications. Atlas is the best way to run MongoDB, the leading non-relational database. To create an account on MongoDB, you can visit their official website. You can sign up using your Google account. This would be the preferred method; however, you can also register using your email address.
Some people are confused about MongoDB and MySQL. MongoDB is a document-based non-relational database management system. It’s also called an object-based system. It is designed to supplant the MySQL structure as an easier way to work with data. On the other hand, MySQL is a table-based system (or an open-source relational database).
Over the years, MongoDB has become a popular choice of a highly scalable database and it is currently being used as the backend data store of many well-known organizations like IBM, Twitter, Zendesk, Forbes, Facebook, Google, and a gazillion others. It is very easy and you can learn it from MongoDB university and they will also provide you certificate for the same free of cost. MongoDB is very easy and you can learn it from MongoDB university and they will also provide you certificate for the same free of cost.
What MongoDB used for?
MongoDB is an open-source NoSQL database management program. NoSQL is used as an alternative to traditional relational databases. NoSQL databases are quite useful for working with large sets of distributed data. It is a tool that can manage document-oriented information, and store or retrieve information. While MongoDB is more flexible and ensures high and diverse data availability, a SQL Database operates with the ACID (Atomicity, Consistency, Isolation, and Durability) properties and ensures greater reliability of transactions. MongoDB does not use SQL as a query language. Why not? This is a very good question and we have discussed it on the project for a long time. There are a few reasons for this.
Relation with JavaScript: Although these methods use JavaScript, most interactions with MongoDB do not use JavaScript but use an idiomatic driver in the language of the interacting application. If you do not need to perform server-side execution of JavaScript code, see Disable Server-Side Execution of JavaScript.

MySQL or MongoDB? Which One is better
MongoDB is a document-based non-relational database management system. It’s also called an object-based system. It was designed to supplant the MySQL structure as an easier way to work with data. On the other hand, MySQL is a table-based system (or open-source relational database). MySQL is a good choice if you are working with a legacy application that requires multi-row transactions and has structured data with a clear schema. MongoDB is a good choice if: You want high data availability along with automatic and instant data recovery
Final thought
I would like to recommend MongoDB Atlas to those person/company who has a significant need for the NoSQL database and does not want to manage their infrastructure. Using MongoDB Atlas can significantly reduce your management time and cost, it saves valuable resources for other tasks.