Businesses in computer and related activities provide technology services to organisations and individuals. Their work may include assessing IT requirements, planning computer systems and networks, advising on hardware and software, and installing or configuring equipment. Some develop, adapt or maintain software, including business applications, websites, databases and systems that connect different services. Other services can include managing data processing or hosting, maintaining computer systems, providing technical support, and diagnosing or repairing faults in computers and related equipment. The range varies between businesses: some focus on consultancy or software development, while others handle day-to-day IT operations, network security, backups or hardware maintenance. Customers may use these services to set up new systems, resolve technical problems, protect information or keep existing technology working.