At many high-growth companies, staying at the bleeding edge of innovation and maintaining the highest level of service availability often sideline financial efficiency. This problem is exacerbated in a micro-service environment, where decentralized engineering teams can spin up thousands of instances at a moments notice, with no governing body tracking cost. By developing a cost-conscious culture and assigning the responsibility for efficiency to the appropriate business owners, you can deliver innovation efficiently and cost effectively . At Netflix, the Finance and Operations Engineering teams bear the responsibility for ensuring that the rate of innovation is fast and that development is cost effective. In this presentation, well explore the building blocks of AWS cost management and discuss Netflixs best practices.