NoSQL databases are highly scalable. They often use a distributed architecture, which makes it easier to add more servers to handle increased load.
NoSQL databases generally offer more flexibility in terms of data models.
NoSQL databases are optimized for specific data models and access patterns.
Many NoSQL databases are open-source and can run on commodity hardware, reducing the cost of server infrastructure.
Many NoSQL systems are designed to support geo-distribution and multi-data center deployments natively.