Juan Ferrer, A.A.Juan FerrerHernández, F.F.HernándezTordsson, J.J.TordssonElmroth, E.E.ElmrothAli-Eldin, A.A.Ali-EldinZsigri, C.C.ZsigriSirvent, R.R.SirventGuitart, J.J.GuitartBadia, R.M.R.M.BadiaDjemame, K.K.DjemameZiegler, W.W.ZieglerDimitrakos, T.T.DimitrakosNair, S.K.S.K.NairKousiouris, G.G.KousiourisKonstanteli, K.K.KonstanteliVarvarigou, T.T.VarvarigouHudzia, B.B.HudziaKipp, A.A.KippWesner, S.S.WesnerCorrales, M.M.CorralesForgo, N.N.ForgoSharif, T.T.SharifSheridan, C.C.Sheridan2022-03-042022-03-042012https://publica.fraunhofer.de/handle/publica/22789710.1016/j.future.2011.05.022We present fundamental challenges for scalable and dependable service platforms and architectures that enable flexible and dynamic provisioning of cloud services. Our findings are incorporated in a toolkit targeting the cloud service and infrastructure providers. The innovations behind the toolkit are aimed at optimizing the whole service life cycle, including service construction, deployment, and operation, on a basis of aspects such as trust, risk, eco-efficiency and cost. Notably, adaptive self-preservation is crucial to meet predicted and unforeseen changes in resource requirements. By addressing the whole service life cycle, taking into account several cloud architectures, and by taking a holistic approach to sustainable service provisioning, the toolkit aims to provide a foundation for a reliable, sustainable, and trustful cloud computing industry.encloud computingsecurityelasticityService Level Agreementoptimisationtoolkitcloud burstingcloud federation003005006518300journal article