The publisher defines validation as the process of gathering evidence and learnings around business ideas through experimentation and user testing, in order to make faster, informed, de-risked decisions. The Validation Guide contains guidance and several tools, including an Assumption Mapper and Experimentation Execution Card for designing and setting up experiments to test ideas and products in iterative ways. The intended audience is large private companies but the principles and tools can apply to idea and product validation by governments. The guide contains several examples from the private sector and the publisher's website contains other free tools. Downloading the free tools is possible in exchange for an email address.