Open Standard(s) – (Open Architecture) – In this scenario, specifications are non-proprietary so add-on products (those that enhance the product such as plug-ins) can be created and integrated into the system more easily. Often open standards product’s specifications are made public, as is the case with Linux. Lack of Open Standards can slow down development and adoption of a technology. An "Open Standard" might be mistaken for a "De Facto Standard", (meaning a standard that exists because of its widespread use, such as Microsoft Windows).