Product release is the act of making a product available to its intended customers. After a product has had its first release, it enters a product release cycle. New versions of the product are made available that may fix defects or add features that were not in previous releases. These changes are categorized as updates or upgrades. An update fixes product defects. An upgrade enhances the product feature set and will include updates.
A good metric system is the one which is simple and cheap and at the same time adds a lot of value for the management. Following are some of the examples that can be used for effective project control and management.
We can collect data about the defects reported, and defects fixed and plot them in the following manner, with their difference showing the defects yet to be fixed. This can give us useful information about the state of the product. If the gap between the defects reported and defects fixed is increasing, then it means that the product is in unstable condition. On the other hand if this gap is decreasing then we can say that the product is in a stable condition and we can plan for shipment.