Stakeholder analysis enables you to identify everyone with a concern or interest who needs to be involved.
Once you have come up with the full list, you then need to categorise it: from people with the greatest involvement, through to more peripheral individuals or groups. The more important the stakeholder is to the success of the project, the more time and resources you need to devote to maintaining their involvement and commitment. The outcome of doing this analysis is that you will understand where to use and focus your resource to engage and influence the stakeholders who can have the biggest impact on success of your project.