Software engineering is a branch of computer science that includes the development and building of computer systems software and applications software. Computer systems software is composed of programs that include computing utilities and operations systems. Applications software consists of user-focused programs that include web browsers, database programs, etc. There is a lot of investment going into software engineering at the moment due to the increasing reliance on mobile technology, venture capital-backed start-ups, the growing complexity of technology, and emerging industries. The demand for skilled and qualified software engineers seems to have no end. This demand is strengthened by a changing economic landscape and fueled by the need for technology solutions. With billions of physical devices around the world that are now connected to the internet and that are collecting and sharing data, all industries are quickly becoming technology-driven industries. Online publishing has become common in scientific publishing where it has been argued that peer-reviewed scientific journals are in the process of being replaced by electronic publishing. It is also becoming common to distribute books, magazines, and newspapers to consumers through tablet reading devices, a market that is growing by millions each year