Rathnakar Achary, PhD, is an associate professor in the Department of Information Technology, Alliance College of Engineering and Design, Alliance University, Bangalore, India. He holds a doctoral degree in Computer Science and Engineering from SASTRA University, Thanjavur, Tamil Nadu, India. He is an alumnus of Mysore University. Dr. Achary is certified in mobile computing from the Indian Institute of Science Bangalore, National Accreditation Board for Testing & Calibration Laboratories (NABL; ISO-IEC: 17025) certified from the Federation of Indian Chambers of Commerce & Industry (FICCI) and is a certified Microsoft professional. The focus of his research is on mobile computing and wireless networks, cryptography and network security, the Internet of Things, cloud computing, edge/fog computing and cloud security. Dr. Achary has published more than15 research papers in peer-reviewed journals for publishers such as Springer, Institute of Electrical and Electronics and Engineers (IEEE) and Association for Computing Machinery (ACM). He has authored a book titled Cryptography and Network Security. He is a member of the Institute of Engineering and Technology (IET), Indian Societyfor Technical Education (ISTE) and Computer Society of India (CSI). Pethuru Raj, PhD, works as chief architect and vice president at the Site Reliability Engineering (SRE) division of Reliance Jio Platforms Ltd., Bangalore, India. His previous stints were at the IBM Global Cloud Centre of Excellence (CoE), Wipro consulting services (WCS) and Robert Bosch Corporate Research (CR). In total, he has more than 19 years of information technology (IT) industry experience and 8 years of research experience. Dr. Raj finished the Council of Scientific & Industrial Research (CSIR)-sponsored PhD degree at Anna University, Chennai, India, and continued with the University Grants Commission (UGC)-sponsored postdoctoral research in the Department of Computer Science and Automation, Indian Institute of Science (IISc), Bangalore, India. Thereafter, Dr. Raj was granted a number of international research fellowships (Japan Society for the Promotion of Science [JSPS] and Japan Science and Technology Agency [JST]) to work as a research scientist for three and a half years in two leading Japanese universities. He has published more than 30 research papers in peer-reviewed journals for publishers such as the Institute of Electrical and Electronics and Engineers (IEEE), Association for Computing Machinery (ACM), Springer-Verlag, Interscience and so forth. He has authored and edited 20 books and contributed to 35 book chapters for various technology books edited by highly acclaimed and accomplished professors and professionals. His work focuses on some of the emerging technologies such as the Internet of Things (IoT), artificial intelligence (AI), Big and Fast Data Analytics, blockchains, digital twins,cloud-native computing, edge/fog clouds, reliability engineering, microservices architecture (MSA), event-driven architecture (EDA) and so forth. His personal website is https://sweetypeterdarren.wixsite.com/pethuru-raj-books.