Swirl Infrastructure as a Service (IaaS) is a form of cloud computing where the Cloud Service Provider (CSP) provides virtualized computing resources through the internet. A client may ask for an IaaS service, deploy the image of its Virtual Machine (VMi) which contain sensitive computation. However, the customer have no means of verifying that its VM run in a secure environment. To address this problem we propose a design of Trusted VM deployment (TVMD) model, in which the customer can deploy its VMi into a set of trusted Node (N) on the IaaS perimeter and enhance backend attacks. This paper show how clients can gain trust into services provided by the CSP by leveraging trust in a neutral third party : an External Trust Coordinator (ETC) that certify that the Node (N) run in a set of trusted node in the IaaS perimeter secured by the ETC through a Trusted Module Platform (TPM).