PostgreSQL is a universal, open source, enterprise-level object-relational database that supports relational SQL queries and non-relational JSON. It is a very stable open source multi-platform database management system.
PostgreSQL is used in many industries, wherever large and complex databases need to be managed. It is used by such giants as Sony, Huawei, Alibaba, Instagram, Tripadvisor, Hitachi, Yandex, Skype, Reddit, Amazon Redshift, FlightAware and many others, including governmental ones.
CRM and ERP-systems, automated banking systems, statistics tracking systems with a large flow of small operations are organized on PostgreSQL: document management automation, warehousing, accounting. PostgreSQL is used for data extraction from various sources, its transformation and loading into the target system or data warehouse, data sampling and analysis, Business intelligence solutions and financial planning products.