Healthcare produces more data than almost any other industry, and uses less of it. The data is scattered across records, labs, claims and faxes that do not connect to each other. The companies in this Market Segment gather it, clean it and make it usable, for three purposes: care, payment and research. They do it in three ways:
The buyers are hospital groups, health plans and research organisations. The ability of different health systems to exchange data is called interoperability.

Every company named here has posted software engineering jobs in India. Famous companies that don't actively hire software engineers in India are left out.
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The data platforms. Back to the patient's scattered records from the start of this Market Segment.
The pipes
The readers
Two companies covered mainly in other Market Segments bring research and security:
Most of the information in a patient's record is free text: notes and reports that structured systems could not use. AI models now read it. They turn ten years of notes into data for a trial, a quality measure or a care plan.

Who these companies hire, and for what, is on What health insurance and billing companies hire for.