1. Scalability: MongoDB is built with scalability in mind. It allows for easy horizontal scaling with sharding, by partitioning data across many servers.
1. Flexibility: MongoDB is a schema-less NoSQL database, which increases data flexibility. It means you can create and modify data on the fly.
1. Speed: It offers high performance for read and write operations.
1. Real-time: MongoDB is excellent for real-time analytics and processing.
1. Large Data Storage: With MongoDB, you can store data in large amounts, including structured, semi-structured, and unstructured data.
1. High Availability: MongoDB increases data availability with multiple replicas.
1. Rich Query Language: MongoDB provides a rich query language that allows for many different types of data processing and analysis.
1. Agile Development: MongoDB accelerates the development with its features such as native duplication, automatic sharding, and high read performance.
1. Support for Geospatial data: MongoDB supports geospatial data for mobile and location-based services.
1. Open Source: MongoDB is an open-source database, which means it can be used freely, modified, and shared by anyone.
1. Widely adopted and has strong community and enterprise support.