Earlier this week, I went to a seminar on Amazon AWS conducted by one of their partner organizations. During the session, one of the slides highlighted success stories from AWS clients — including Sony Corporation. They shared how Sony migrated to AWS and adopted PostgreSQL as part of their cloud transformation strategy.

Until now, I hadn’t used PostgreSQL myself, but this made me curious — how many major corporations have actually made the switch to PostgreSQL? Just out of curiosity, I started looking into it.

Here’s a list of well-known companies that have moved to PostgreSQL, driven by reasons like cost savings, better scalability, and the flexibility offered by open-source technologies.

Companies Migrated from Other databases to PostgreSQL

• Yandex.Mail: The Russian tech giant migrated its Yandex.Mail service from Oracle to PostgreSQL to enhance scalability and reduce licensing costs. Link

• The Guardian: The British news outlet migrated from MongoDB to PostgreSQL in 2018. Link

• Met Office (UK): The UK’s national weather service replaced Oracle with PostgreSQL as part of a broader strategy to adopt more open-source technologies. Link

• Sony Corporation The multinational conglomerate have moved to AWS PostgreSQL for more effeciency and scalability.

Other notable companies using PostgreSQL

• OpenAI: Utilizes PostgreSQL as a core component of its API services, including for ChatGPT, leveraging its robustness and scalability.Link

• Microsoft: Employs PostgreSQL for its petabyte-scale “Release Quality View” analytics dashboard, analyzing metrics from over 800 million Windows devices. Link

• Reddit: The social news aggregation platform uses PostgreSQL to manage its vast user-generated content.

• Instagram is using PostgreSQL and Cassandra for its backend. Link

These are the small list of companies I just found by googling and asking ChatGPT. I know there are many more, but I just want satisfy my curosity. If you want more you find out the list in the notable section in the Postgres Wikipedia link.