For software to be tested effectively, it must be designed from the start with that goal in mind. Testability, like quality itself, cannot be an afterthought: it must be considered from the start - before the first line of code is ever written. To establish and maintain a certain level of technical quality on macro (architecture) and micro (implementation) level it is necessary to apply an agreed set of simple coding conventions.
Read this white paper to learn more about the rules of architectural quality.
