The 22nd International Conference on Reliable Software Technologies – Ada-Europe 2017 will take place in Vienna, Austria, from June 12, 2017 to June 16, 2017. Following its traditional style, the conference will span a full week, including a three-day technical program and vendor exhibition from Tuesday to Thursday, along with parallel tutorials and workshops on Monday and Friday. The conference will provide an international forum for researchers, developers and users of reliable software technologies all over the world. Presentations and discussions cover applied and theoretical work currently conducted to support, the development and maintenance of reliable software systems.