Data privacy is an intricate job and is becoming a key area of research as far as cloud technologies are concerned. This is because the information is massively generated from many sources. It's collected, shared, and disseminated in many different segments. Due to this factor, countless individuals or organizations have absconded the cloud services despite the fact of their endless fruitiness benefits. Providing security to this data is a major concern. There are numerous ways this data can be protected from unauthorized users. Hence, data security and privacy are becoming very important fields of research for the future development and improvement of cloud technologies for the government, business, and industry. Data privacy protection issues are relevant to both hardware and software in the cloud architecture. Therefore, this study will review different data privacy concepts, data access protection methods, approaches to manage data privacy, data privacy techniques, challenges faced during data access, and some research trends in data privacy.