I wrote an article on change management using Kotter’s Change Management Model. See the link here:
https://www.linkedin.com/pulse/change-management-nnamdi-onyebuchi/. The model is kind of universal and can be used while introducing any major change in the organization. Regarding the most important ICT innovations in the context of business organisations, I think it depends on the kind of business outcomes the organization expects. On a general sense, Mobility and Security of information are very essential to any business today because of the rise in the adoption of public cloud platforms by businesses.