It used to be that people only worried about testing online training lessons on Internet Explorer and Netscape. Those days are long gone. Today, there are myriad testing challenges due to the vast number of hardware devices and display environments that learners are using. Developing and testing lessons to ensure that they will work for everyone is an incredible challenge. This session explores a variety of quality assurance test strategies that are currently being used in software engineering corporations to test their products, and shows how you can carry over those strategies into the world of eLearning and mLearning.