Project Sizing means a process of defining and estimating the extent to which project management practices are formally applied throughout a project. It is a relative measure of work effort planned for the project.
The sizing process helps identify scope of project management activities particular to a given project. It aims to determine the effort, attention and resources to be assigned and allocated within the project to ensure successful delivery of desired outcomes.
Requirements are the major parameter in project size estimation. A larger and more complex project entails higher requirements. Along with requirements, the following parameters are used in estimating project size:
- Number of people involved
- Project time length
- Problem and solution complexity
- Strategic context
- Dependencies between project activities
Project sizing is similar to project scoping, yet both processes are not the same. While the sizing process aims to determine the extent of project management practices to be applied to a project, the scoping process focuses on determining time, cost, and quality that are required to keep the project worthwhile.