Improvement models vary from on-going Continuous Improvement to large scale transformation programs being run across the entire organisation.

Whilst there are different models, there are commonly accepted roles:

• Business owner (sponsor) ultimately responsible for improvement in their business unit
• Initiative owners responsible for successfully implementing the initiative through to ‘locked-in’
• Improvement lead responsible for facilitating and driving improvement within the team (or workstream in a large program); the lead may also have supporting team members including analysts and a coach
• Gate approvers responsible for giving gate approval if the initiative meets gate requirements (usually the business owner, improvement team and Finance)