Mobile app development is a term used to denote the act or process by which a mobile app is developed for mobile devices, such as personal digital assistants, enterprise digital assistants or mobile phones.

Web development is a broad term for the work involved in developing websites. Web development can range from developing the simplest static single page to the most complex web-based internet applications

A field of activity focuses on advising organizations on how best to use it in achieving its business objectives. Oftens estimate, manage, implement, deploy, and administer IT systems on behalf of their client organizations.

Security, is the defense of digital information and IT assets against internal and external, malicious and accidental threats. This defense includes detection, prevention and response to threats through the use of security policies, software tools and IT services