The solution of composite partial differential equations is an indispensable step in numerous scientific applications. However, this is a computationally and memory demanding process for large-scale differential equations. This is especially true for multi domain/multi physics problems, which require application of an Interface Relaxation (IR) methodology on the common boundaries between domains. In this paper, they present a cloud-based environment for the solution of multi domain/multi-physics problems. Efficiently exploits the inherent parallelism found in the solution step for the individual subdomains, thus significantly reducing computational and memory requirements.