Industrial Software Applications: A Master's Course for Engineers by Geisler Rainer

Author:Geisler, Rainer [Geisler, Rainer]
Language: eng
Format: epub
Publisher: De Gruyter
Published: 2015-01-22T16:00:00+00:00

Changes that are classified as minor or as urgent will take a slightly different path in the process as compared to so called “normal” changes.

4. Authorize the change: Formal authorization from a change authority is required for every change. This may be a role, person or group of people. The level at which approval is required depends on the change type: the bigger and riskier the change, the higher the hierarchy for approval needs to be.

5. Change planning and scheduling: CM schedules the changes on the change calendar: the Schedule of Change (SC) that contains the details for all approved changes and their planning, e. g. implementation dates. Changes can be bundled into a release. In consultation with the relevant IT departments, the change authority board may set up fixed times to implement changes at moments in which services will be hindered as little as possible by changes. A recovery plan must be prepared in case of a change implementation.

6. Coordinate change implementation: Authorized RFCs should be passed on to the relevant technical groups for building the changes. Building and creating a release are issues discussed in the ITIL process of “Release and Deployment Management”. The changes should be tested thoroughly, as well as the remediation and the implementation method for the changes. The ITIL process “Service validation and testing” describes testing in detail.

7. Review and close change record: Implemented changes are evaluated after some time – perhaps with the exception of “standard changes”. The change advisory board (CAB) then determines whether further follow-up is required. The CAB pays attention to the following matters:

– Did the change realize its intended purpose?

– Are all the stakeholders satisfied with the outcome?

– Did any side-effects occur?

– Were the estimated costs and effort exceeded?

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