http://searchcloudcomputing.techtarget.com/tip/Four-types-of-cloud-KPIs-to-track-and-optimize-a-deployment?src=5712518&asrc=EM_ERU_88718969&utm_content=eru-rd2-rcpF&utm_medium=EM&utm_source=ERU&utm_campaign=20180201_ERU%20Transmission%20for%2002/01/2018%20(UserUniverse:%202514766)