Document code:  PRO-0027.06  Security level:  Internal  Effective date:  15/01/2019  ICT Governance  3.5.1. Project Mode and Maintenance Mode for an IT Product  3.5.2. Change Management TEM-0129.01  Uncontrolled copy once printed. Ensure that the right version is in use.  Page  34  of  92 • to ensure that potential changes to EC HA’s IT, Services, and Products are well  understood, assessed and agreed or rejected by the relevant authority,  The purpose of IT work is to implement Services, upgrade Services, run Services and to  support Services. A Service is often based on one IT Product or more. When such Products or Product upgrades are delivered via a Project, the target version of  the Product(s) is said to be in  project mode . When Product upgrades are delivered as part of regular Change Management, the target  version of the IT Product(s) is said to be in  maintenance mode  and is sometimes  referred to as Change Release  (CR) . Different versions of the same Product can be in different modes simultaneously, for  example, Release 1.5 can be in maintenance mode while Release 2.0 is at the same time in project mode. The following picture illustrates a typical IT Product progression:  A sensible way of looking at it is thinking that an IT Product is built (oftentimes  incrementally) through one or more projects until it reaches a level of maturity, after  which there is ongoing maintenance and occasional projects, depending on needs, ageing  of technology, replacement of functionality etc., until the Product is decommissioned.  Change Management is used Release  2.2 Release  2.3 Release  2.x . . . -------- Maintenance Releases --------- Release 1.0  Project Closure and  Go-Live  Release 1.0 Project Release  1  M a inten a nce Release 1 Release  1.1 Release 2.0 Project Release 2 Release  1.2 Re lease  1 .3 Release  1.x . . . Release  2 Maintena nce Release 1.0  Project Start Project Start (a further major version) Project Closure and  Go-Live  (a further major version) -------- Mainten ance Releases --------- Release  2.1