Hazelcast is a software company that provides an in-memory data grid (IMDG) solution. The company's IMDG technology is designed to improve the performance of applications by storing data in memory rather than on disk. Hazelcast's IMDG solution is used by companies in a variety of industries, including financial services, telecommunications, and e-commerce. The company was founded in 2008 and is headquartered in Chicago, Illinois.