What's the difference between a sponsor and a stakeholder?

A sponsor is one of the stakeholders. A stakeholder is simply someone who is affected by the project, and they can have various degrees of influence. The sponsor is generally the person who signed off on the projects beginning and is the most important stakeholder.

The sponsor is generally the person who signed off on the projects beginning and is the most important stakeholder. They have a vested interest in the project’s success.

They are generally one level above the PM, and the PM “reports” to them

The promote the project with the organization

The ensure the PM has adequate resources.