When would MySQL be a better fit?

While many organizations have successfully migrated from an RDBMS to MongoDB, you cannot drop-in MongoDB as a replacement for legacy applications built around the relational data model and SQL. However, organizations are benefiting from modernizing mission-critical, revenue-generating applications to MongoDB. For example, Cisco migrated its eCommerce platform from a legacy relational database to MongoDB. As a result, it has improved customer experience by reducing latency 8x and eliminated downtime during system upgrades. Its development teams can build and release new applications faster, while the company’s e-commerce platform can tap into the business agility enabled by cloud computing.