What term describes a significant event that marks progress in a business project?

The term "milestone" is used in project management and business contexts to refer to a significant event or point in time that marks important progress or a major achievement in a project. Milestones are essential for project tracking and help teams and stakeholders evaluate progress, allocate resources appropriately, and celebrate accomplishments. They serve as key indicators that specific phases of a project have been completed, allowing for better management and planning for future stages.

In contrast, while "achievement" refers more generally to any successful outcome, "landmark" typically denotes a notable physical feature or event and is less specific to project management. "Benchmark" generally relates to a standard or point of reference used for comparison, rather than signifying specific events in the progression of a project. Therefore, the use of "milestone" as the correct term is both precise and widely recognized in business project terminology.