In this project, based on the requirements of a client for a real environment, we have seen the necessary steps and the challenges that are encountered when designing a high availability datacentre solution distributed among different locations. In the first place, this design has been chosen in a traditional way. That is, using physical equipment to perform the various network functions required in the architecture. The initial design has been made and, once the devices have been chosen and considering the technologies they use, the physical topology has been proposed. As an alternative to this design, it is proposed to implement the solution for the client using a virtual architecture based on Software Defined DataCentres (SDDC) and SDN (Software Defined Networks), technologies that are currently being used to replace the use of traditional architectures in datacentres. In this case the VMWare NSX architecture has been used to do this virtualization. To design this solution, VXLANs overlay technology, distributed network services and network services deployed over virtual appliances used by NSX have been used to offer, from the functional point of view, the same services. The objective is to verify if it is possible to satisfy all the requirements of a real client using network virtualization, and to see what advantages and disadvantages the use of this technology presents, in relation to the traditional architecture proposed.