Project success and project failure are NOT absolutes. Remember:
Every project has multiple success criteria related to business results, product/service results, and project delivery results (cost, schedule, scope, and quality). Some criteria are absolute, meaning they must be completed on or before the original planned date, and some are relative, meaning they must be completed by a date acceptable to the client.
Project success is determined by how many of your success criteria are satisfied, and how well. Whether or not a project is successful also depends on who you ask. For example:
You can see that they may all have very different opinions on the success of their project.
Project Success also depends on when you ask. For example, twelve months after the go-live, the users will have a better grasp of the system and initial performance problems will have been solved. And slowly but steadily, the expected savings will hopefully start to materialize as well. So in order to define success and failure of your project you should:
And that is where the Project Success Model can help you.
2. COO = Chief Operating Officer