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In the recent years telecommunication operators have been more and more demanding for a cloud-native deployment on their already existing Information Technology (IT) infrastructure of the IP Multimedia Subsystem (IMS) core and the telecommunication platform in general. Such flexibility requires the telecommunication vendors to develop new software architectures allowing the deployment of many different cloud platforms or even heterogeneous cloud platforms automatically in a unified fashion. This thesis proposes a cloud-native, scalable, heterogeneous and distributed software architecture based on the actor model. The architecture allows development of software once and a single software version on multiple cloud platforms, e.g., bare metal Linux servers, IaaS, PaaS, etc. It enables solution-based and hybrid cloud deployments. A novel concept of pouch is proposed to abstract the deployment platform from the application. The architecture is based on the adaptation of a number of cloud architectural patterns. The horizontal scaling and sharding patterns are used to distribute the processing on pouches while maximizing cache hit. The auto-scaling and busy signal patterns ensure QoS by scaling out when capacity of a pouch is reached. MapReduce pattern facilitate collection of logging information. The collocate pattern is applied to minimize the latency experienced by the application. Finally, usage of the actor model makes the proposed architecture highly granular, allowing a persubscriber, per-service deployment. The proposed architecture allows efficient resource allocation through the cloud in order to prevent overloading of …