The primary purpose of a project charter in IT projects is to formally authorize the project's initiation and outline key objectives, stakeholders, and resources. It serves as a foundational document that provides clarity on the project's purpose, scope, and expectations. By defining roles, responsibilities, and timelines, the project charter helps ensure alignment among team members and stakeholders from the start. This document is crucial for securing necessary funding and support, as it justifies the project’s importance and feasibility. A well-structured project charter enhances project management effectiveness and increases the likelihood of successful outcomes.