Change Management/Change Control

Change Management/Change Control: Ensures standardized methods are used for all changes. A change is an event that results in a new status of one or more configuration items (CIs), and which is approved by management, is cost-effective, enhances business process changes (fixes) – all with a minimum risk to IT infrastructure.

Change Management Goals:

  1. Minimal disruption of services
  2. Reduction in back-out activities
  3. Economic use of resources involved in the change

Change Management Types:

  1. Service Asset and Configuration Management - Maintaining information about configuration items required to deliver an IT service. Processes include:

    • Identification
    • Planning
    • Change Control
    • Change Management
    • Release Management
    • Maintenance
  2. Release and deployment management - Distribution of software and hardware, including license controls across the entire IT infrastructure and protection of the live environment and its services through the use of formal procedures and checks.

    • Goals of release management include:

      • Planning the rollout of software
      • Designing and implementing procedures for the distribution and installation of changes to IT systems
      • Effectively communicating and managing expectations of the customer during the planning and rollout of new releases
      • Controlling the distribution and installation of changes to IT system.
    • Release categories include:

      • Major software releases and major hardware upgrades, normally containing large amounts of new functionality, some of which may make intervening fixes to problems redundant. A major upgrade or release usually supersedes all preceding minor upgrades, releases and emergency fixes.
      • Minor software releases and hardware upgrades, normally containing small enhancements and fixes, some of which may have already been issued as emergency fixes. A minor upgrade or release usually supersedes all preceding emergency fixes.
      • Emergency software and hardware fixes, normally containing the corrections to a small number of known problems.
    • Types of release units:

      • Delta release - a release of only that part of the software which has been changed. For example, security patches.
      • Full release - the entire software program is deployed—for example, a new version of an existing application.
      • Packaged release - a combination of many changes—for example, an operating system image which also contains specific applications.

Types of Changes

  1. Standard Change
  2. Normal Change
  3. Urgent/Emergency Change