• MongoDB  is a document-oriented database that stores data as [BSON objects]  or documents  organized into collections.  These documents can be retrieved as JSON’s. This means you can store records without using the column and row structure found in RDBMS.
• There are many MongoDB cloud solutions available. What solution a development team or company ultimately decides on will likely come down to features, pricing, and integration with your existing architecture.
• MongoDB Atlas is the solution offered by MongoDB the company. As such, MongoDB Atlas is the most complete MongoDB solution. With MongoDB Atlas, you will have access to all the MongoDB features and methods, including map-reduce . Additionally, you will be able to run the v4.4, v4.0, or v3.6 API.

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