Abstract. With the evolution of distributed systems in size and complexity, software deployment remains a challenging task. Despite the existence of several approaches, most of them use informal models that lack a solid mathematic foundation. In this paper, we propose a bigraphical based approach for modeling and formalizing the deployment of distributed applications. This approach relies on multi-scale modeling. So, we start by modeling the first scale with a bigraph. This bigraph is enriched, through a series of reaction rules, until reaching the last scale that represents the deployment architecture.