Establishing Testing Scope

If your organization uses many applications, you might not have time to test all of them as thoroughly as you would like. Test the highest priority and the most frequently or widely used applications first, but do not limit your testing to only these.

Test both server-based and client-based applications. Client-based applications are usually the most difficult and time-consuming to test because of sheer numbers.

If the commercial applications you use have already been tested by an external organization, you still need to test them in your environment. Tests that determine compatibility with underlying Windows 2000 technologies do not necessarily prove that applications will function in your environment as you use them. For more information about commercial applications that have been tested externally, see "Testing Applications" later in this chapter.