This book will describe the concepts of Big Data, Data Science, Cybersecurity, and the analytics and metrics of these concepts in detail. This book will cover all the basic concepts of these technologies. In the present data-driven world, the maintenance of data is extremely important. This book will guide its readers on the impact of Big Data on the current businesses and companies, how data science is a promising new career, what is required by the data scientists these days and important languages that need to be learned in order to cope with the new requirements of the practical field of Data Science. Regarding the cybersecurity topic, this book will guide its readers, showing all the elementary theories of cybersecurity. This book includes the most famous kinds of threats and techniques used by hackers these days. It also covers the impact of cyber-security on businesses, how the impact of cyber threats can be reduced in companies, and the best practices that the companies can utilize in order to stay safe and sound over the web. All these guidelines will help small to medium-sized businesses to establish strong defense strategies for themselves. The last section of this book will explain the analytic and metrics used for big data, data science, and cybersecurity. The analytic techniques examine the IT infrastructure, whereas the metrics are responsible for measuring the well-organized performance of the company. The analytic and metrics guideline will help companies to understand their IT organization and the ways in which they can explain their performance to other individuals. By using these guidelines, any company can increase the value of their business. By using the latest technology and evaluating the company's structure, better results can be achieved in terms of the performance of the company.