Data centers based applications provide a wide variety of services
such as cloud computing, video gaming, grid application and others.
Currently application decisions are made with little information
concerning underlying network used to deliver those services so that
such decisions cannot be the most optimal from both network and
application resource utilization and quality of service objectives.
This document presents a novel architecture of Cross Stratum
Optimization for application and network resource in dynamic optical
networks. Several global load balancing strategies are proposed and
demonstrated by experiments in Optical as a Service experimental
environment.