*1.1. Motivation*

The main contribution of this article is to give an analytical insight into the use of big data analytics in medical institutions. This paper aims to understand how big data are applied in the field of digital health services, to present the available tools and applications, describe the most important actions and research work, as well as the technical and organizational challenges that arise. Healthcare organizations and institutions considering implementing big data analytics technology, as well as those already using it, have the opportunity through this study to gain a comprehensive and detailed understanding of its potential for use, effective targeting, expected impact, and the challenges they will face.
