Impact Analysis?

Assume once the complete application is been ready for testing from the development side; If one more module is to be added, then we (software testers) need to test the new module as well as the impacted area which might be affected by adding a new module.

Impact Analysis will be done to locate the impact region of the application by adding a new module. Usually a team lead will kick off for this analysis and prepare the Impact analysis document which generally has the variation/deviation stuffs.

When the “Impact analysis” will be essential?
* New module is added.
* Testing the Upgraded application which has a new edition (or) after Bug fixing.

All the cases are better to discuss with development team for detail Impact analysis. If developer is not available then check the design document and functional diagram for the data flow and find the dependency with the fixed or supplementary modules.