  What is Software Architecture? The rules, paradigmen, pattern that help to
construct, build and test a serious piece of software. It is the practical
experience boiled down to abstract level. Software Architecture builds on
System Engineering and the scientific method as established by Galileo Galilei:
Measure what you can and make measureable what you can not. The experiment
(test) is more important then the deduction. Pieces of information about
software architecture are all over the internet. This paper uses citation as
much as possible. The aim is to bring together an overview, not to rephrase the
wording.
