TORCH: a TOSCA-Based Orchestrator of Multi-Cloud Containerised Applications

Abstract The growth in the number and types of cloud-based services offered to IT customers is supported by constant entry new actors market consolidation disruptive technologies such as AI, Big Data Micro-services. From customer’s perspective, a landscape where cloud offer highly diversified due presence multiple competing service providers, picking that best accommodate their specific needs critical challenge. Once choice made, so called “cloud orchestration tools” (orchestrators) are required take care customer application’s life-cycle. While big players proprietary orchestrators, literature quite open-source initiatives have launched multi-cloud orchestrators capable transparently managing applications on top most representative platforms. In this paper, we propose TORCH, TOSCA-based framework for deployment applications, both classical containerised, providers. assists defining application requirements using standard specification models. Unlike other adopts strategy separates provisioning workflow from actual invocation API. main benefit possibility add support any platforms at very low implementation cost. present prototypal TORCH showcase its interaction with two different container-based cluster Preliminary performance tests conducted small-scale test-bed confirm potential TORCH.