Here is the definition from PMI

A project is temporary in that it has a defined beginning and end in time, and therefore defined scope and resources.

And a project is unique in  as it  is not a routine operation, but a specific set of operations designed to accomplish a singular goal. So a project team often includes people who don’t usually work together – sometimes from different organizations and across multiple geographies.

 

Three Characteristics of Project

  • Unique
    • Project is unique  i.e.  it is not a routine operation, eg. the building of cars in a car factory is not a project as it is a routine or business as usual operation. If the company decides to launch a new car, then competing the design of the car will be a project as it will be unique
  • Temporary
    • A project is temporary  i.e. it has a defined beginning and end in time, and therefore defined scope and resources.
  • Progressively Elaborated
    • The scope and requirements may be less clear on day 1 when a project starts and progressively more an more clarity comes in.