Systems outside the testing radar
When is a system small, non-complex or unprioritzed enough not to be tested? If there is a test organisation working on the bigger system that will be released to customer, what happens to the other smaller systems then? Is it so that they are almost always left untested? I usually identify these as applications that are created by one person, they can be used in critical parts of the product development, but are not viewed at as a product, sub-system or application that needs to be tested.

