I think a combination of good ole ITIL
“... a means of delivering value to customers by facilitating the outcomes customers want to achieve without the ownership of specific costs and risks” Where the focus is on "value" and "without the ownership of specific costs and risks"...take Gmail value - easily accessible, etc OF course the risk of it not being there is still yours but you don't need to worry about specific costs and risks of maintenance, etc.
and my own which I use for simplicity because it links to so many of the ITSM processes and helps me relate the value of ITSM i.e. everything after 'plus any...' below
A product (software, hardware, chinese takeaway!!) and its delivery to customers plus any combination of support, maintenance, marketing, administering, measuring, R&D, future-proofing, cost management, disaster mitigation and security you or your customer are willing to pay for.
Last edited 03 September 2016