This book constitutes the refereed proceedings of the 20th Ada-Europe International Conference on Reliable Software Technologies, Ada-Europe 2015, held in Madrid, Spain, in June 2015.The revised 12 full papers presented together with two keynotes were carefully reviewed and selected from 36 submissions. They are organized in topical sections on language technology, real-time applications, critical systems, and multicore and distributed systems.

This book constitutes the refereed proceedings of the 20th Ada-Europe International Conference on Reliable Software Technologies, Ada-Europe 2015, held in Madrid, Spain, in June 2015.The revised 12 full papers presented together with two keynotes were carefully reviewed and selected from 36 submissions. They are organized in topical sections on language technology, real-time applications, critical systems, and multicore and distributed systems.