MongoDB has raised $311 million across multiple pivotal rounds, including a $7.7M Series F (Mar 9, 2017), a $250M Post-IPO financing (Jun 2018), and a $1B Post-IPO round (Jan 10, 2020) used to accelerate cloud expansion and product scale. Founded in 2007, MongoDB built a developer-friendly, document-oriented database and later delivered Atlas, its managed DBaaS. Funding supported global cloud footprint, vector and search features, enterprise security and multi-region resilience transforming MongoDB from an open-source database into a subscription SaaS leader for modern application development.