A greenfield project refers to the construction of plants, factories or IT systems on a "greenfield site", i.e. on previously unused land without existing restrictions due to pre-existing structures. The term comes from urban development and landscape planning, where it literally means building on green fields.
In industry and IT, a greenfield project offers the opportunity to implement state-of-the-art technologies and processes without compromising existing systems or practices, which often leads to more innovative and efficient solutions.