Project Deadline is the final time point to which a given project is targeted and by which this project should be completed. It characterizes a desired time-frame for the project and links initial time expectations to the project’s ability of being produced in a timely manner.
Ideally, project deadline equals project completion time. It means the project is completed on time. In practice, deadlines do not follow completion time because of many factors, including inadequate project scheduling, high risks, lack of change control, undefined project requirements, others.
Sometimes, projects are completed before their desired time-frames or deadlines. But it does not necessarily mean that those projects are effective and produce desired outcomes. Completion prior to deadline is often caused by intensified use of project resources, strengthened commitment, increased investments, etc. All these and other factors of early project completion may have a negative impact on project stakeholders (especially, project manager, team and sponsor who provide the greatest commitment to their project).