https://en.wikipedia.org/wiki/IT_service_management
https://en.wikipedia.org/wiki/Technical_support
https://en.wikipedia.org/wiki/Computer_security
https://simple.wikipedia.org/wiki/Cloud_computing
https://en.wikipedia.org/wiki/Backup_and_Restore
https://en.wikipedia.org/wiki/Information_technology_consulting
https://en.wikipedia.org/wiki/Outsourcing#Information_technology_outsourcing