Christian Hassa helps organizations to utilize software development more effectively in supporting their business goals. He focuses on the collaboration of software delivery teams with business stakeholders, specializing in particular on impact mapping, story mapping and specification-by-example. Christian is working in software development since the early 1990ies. He is managing partner at TechTalk, a .NET services and consulting company focusing on agile coaching and delivery. In 2007 Christian and his team at TechTalk initiated SpecFlow, a .NET open source tool for BDD and specification-by-example.