This report provides an analysis of software defect density data from projects in the ISBSG Software Development and Enhancement Repository. The report is split in to two parts: an analysis of defects found in the first 30 days after software goes into operation and an analysis of defects found during software development:

The report also provides useful ratios of when and where defects are discovered and the severity of those defects.

The analysis data set is very broad with over 30 different organisation types represented and a hundred different application types. Analysis results are provided by: Organisation type; Application type; Development Platform; Language Type; Project Size; and Speed of Delivery.

The report can be used to benchmark against or to help with test planning and management.