MongoDB Claims Edge Over PostgreSQL with Atlas Wins and Strong Q2 Growth

MongoDB announced strong Q2 2025 financial results, with revenue rising 13% to $478.1 million, surpassing expectations, while reporting an operating loss of $71.4 million, higher than the $49 million loss a year earlier.

CEO Dev Ittycheria credited part of the success to winning a workload from Fanatics Betting & Gaming, where MongoDB Atlas replaced PostgreSQL, offering better scalability, flexibility, and integrated Atlas Search for an improved user experience.

He highlighted MongoDB’s flexible JSON‑like document model, horizontal scaling, automatic sharding, and superior performance on large data sets compared with PostgreSQL, which he said suffers from legacy complexity despite its 40‑year history.

According to a recent Stack Overflow survey, PostgreSQL remains the most popular database among professional developers, with 52% using it, while MongoDB continues to gain market share.

MongoDB also noted that many cloud providers support PostgreSQL front‑ends, and compatible services such as CockroachDB and YugaByteDB offer near‑compatible PostgreSQL APIs for globally distributed applications.

Despite the positive market reaction—MongoDB’s stock rose 14% after the earnings release—the company cut its revenue growth outlook for the remainder of the year, causing its valuation to fall by about a quarter.