Software engineering and the language Ada are playing amajor role in the development of software and softwaretechnology for the new century.The11th Ada Europe conference shows that Ada has maturedfrom a language, mainly of researchers and academics in theearly 1980s, into a full-grown tool in software engineeringpractice. This volume contains a selection of contributionsto the conference. They demonstrate that Ada is verybeneficially used in many software development projects andis gradually becoming accepted on the scale it deserves.Papers have been selected that show that Ada is indeedripened in all aspects of software engineering. A variety oftopics is addressed: management, economics, practicalexperiences, numerics, and the use of Ada for real-time anddistributed systems.