Testing cloud services using the TestCast toolTesting cloud services using the TestCast tool Κεφάλαιο σε Βιβλίο Book Chapter 2019-11-132018enThis work presents the testing requirements for cloud services including unit and integration testing by identifying services that could communicate with each other according to their APIs. We also present the Elvior TestCast T3 (TTCN-3) testing tool that provides an efficient and easy to use solution for automating functional tests. This allows incremental development where users can test specific systems and features separately as well as the entire system as a whole. We finally demonstrate the empirical results as lessons learned from our experiences when apploying such solution in testing real world cloud health services.http://creativecommons.org/licenses/by/4.0/Advances in Intelligent Systems and ComputingInformation Technology - New Generations Σωτηριαδης Στελιος Sotiriadis Stelios Lehmets Andrus Petrakis Evripidis Πετρακης Ευριπιδης Bessis, Nik, 1967- Springer Verlag Cloud computing Cloud service testing Cloud services TestCast TTCN-3