illustrate the importance of automated SQA that is continued even after the first operational deployment of evolving enterprise-wide client-server software with the specific example of their experience with Springer Verlag’s Online Conference System (OCS). SQA efforts, particularly the testing efforts, in a system development life cycle till the first deployment of the system in the user environment, are well above 20-30% of the total development efforts. This percentage increases further, if we consider the testing efforts for each new upgrade of the system during its operation. Even then, (i) some number of “functional bugs;” (ii) possible non-acceptance of certain software features by the users; as well as (iii) some performance issues due to “feature interaction;” remain unnoticed during the testing efforts. The authors Johannes Neubauer, et al. [8] explain how the automata learning (as provided by LearnLib, a software tool described by Maik Merten, et al. [25]) used to study the user behavioral model of OCS has helped mitigate the three problems encountered during “classical” testing of functional properties carried out manually viz., (