One of the most common approaches for evaluating teamwork is to estimate in man-hours. While man-hours are SIMPLE to comprehend, they have a number of SIGNIFICANT drawbacks:

• Few activities, such as legacy work, are difficult to estimate precisely.
• If one team member delivers the estimate but the task is completed by another, the estimate is useless.
• The amount of time it takes to perform a task depends on the developer's level of experience.
• Teams frequently overestimate the obstacles they may face and simply consider the best-case scenario.

The benefits of estimating USER STORIES in points include the following: There is no association between the estimator's skills and experience, and story points are independent of the story's author. The team members can estimate more correctly since story points are a measurement of relative sizes, and the size of the story cannot be changed by external forces. As team behavior takes precedence over individual conduct, Story Points encourages collaboration. The team comes together when they use planning poker to estimate story points. As teams exchange, constructively criticize, argue, and have fun playing poker cards to arrive at an agreement on estimations, it serves as a team-building activity.