The book provides a compact introduction to the topics of e-business and cloud computing. It imparts knowledge related to computer science and business management, and presents practical applications. After an introduction to the topic of e-business, which also explores the "Internet of Things," foundational concepts such as HTML, XML, and RESTful services are discussed. This is followed by a description of cloud computing, highlighting its origins and characteristics from both a business and information technology perspective. The use of services is illustrated through various applications in the fields of e-marketing, social networks, customer relationship management, and big data. The availability of RESTful APIs is also a subject of consideration. The development of e-business applications is examined through two projects.