The world is using technology more than ever before. This means running billions of applications on computers somewhere on the planet but as someone who is concerned for the environment what does that mean? If I pick microservice architecture over monolithic on the cloud, does that save electricity? All cloud hosting companies have their own data centres but if you take cost out of the equation what cloud provider is doing the most to save energy and therefore the planet? This talk will give you a brief look into how these data centres work and the impact they have on the environment.