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Information System (shortly known as IS) is the study of network software and hardware, which is used by the companies and people to create, collect, process, filter, and distribute data.

Information System is also defined as the collection of software, hardware, database, procedures and people to provide quality information. Some IS researchers said information system can be found in many disciplines like engineering, management science, computer science, mathematics, cybernetics, and more.

Main Components:

Some of the key components of information system are:

  • Hardware
  • Software
  • Data
  • Procedures
  • People

Areas of work:

Information system has a number of different work areas such as:

  • IS Management
  • IS Strategy
  • IS Iteration
  • IS Development
  • IS Organization

Types:

The below four different types are categorized with different hierarchy levels in an organization.

  • Transaction Processing Systems
  • Management Information Systems
  • Decision Support Systems
  • Executive Information Systems

Some of the examples that match the above systems are enterprise systems, search engines, office automation, data warehouse, global information system, expert system, enterprise resource planning, and geographic information system.

Many organizations have a CIO (Chief Information Officer) position to produce quality information. He sits along with CEO (Chief Executive Officer), CFO (Chief Financial Officer), COO (Chief Operating Officer), and CTO (Chief Technical Officer). There is also a position named CISO (Chief Information Security Officer) to focus on information security management.

The below video briefly describes what is an information system: