All rights reserved deu Seif, J. (Jürgen) 2003 Softwarearchitektur St. Pölten, Fachhochschule Telekommunikation und Medien, Dipl.-Arb, 2003 This diploma thesis deals with the topic of loosely coupled systems, from their historic development in the early days of data processing leading to the products and solutions of nowadays. The comparison of the J2EE Environment from Sun and Microsoft’s .NET platform, shall bring a conclusion which possibilities and future prospects this architectures will have. Both platforms are described and reviewed in the fields of the development, deployment, scalability, performance, stability, portability and security of enterprise applications. By taking a look on reference implementations of enterprise applications the factual issue about the pro and cons of both technologies shall be discussed and rated. http://phaidra.fhstp.ac.at/o:1079 application/pdf 798320 bytes Loosely Coupled Systems Text