Before revision: The term project owner used to be ambigous, since it can refer to various different roles, such as the project sponsor, or a team including the sponsor, project champion and the owner's project manager, or simply the customer.Difference between Project Owner and Sponsor | EUR However, these roles have been clarified and the project owner / project executive is now defined as "the senior manager who is held accountable for realizing the business case"
After revision: However, the term project owner is ambigous, since it can refer to various different roles, such as the project sponsor, or a team including the sponsor, project champion and the owner's project manager, or simply the customer.Difference between Project Owner and Sponsor | EU