Big Data analytics is employed to derive insightful information, such as occult patterns, obscure relationships, market trends, and consumer preferences. Better decision-making and the prevention of fraud are achieved through the use of big data analytics. One of the most well-known sectors where data analytics is having a big impact is healthcare. Healthcare analytics offers the ability to lower treatment costs, anticipate epidemic outbreaks, prevent infections, and enhance quality of life. This paper presents a comprehensive evaluation of several current studies on big data analytics and healthcare analytics. Big data architecture and big data technology are also discussed in this paper.