We Know that today's scenario more and more people are opting for cloud computing for there computing needs. One of the benefit is that it will eliminate the risks involved with purchase of a new application . To deliver such high performance computing cloud data centers are equipped with tens to hundreds of thousands of servers delivering applications to millions of users. In such situation network performance must be uninterrupted, highly reliable and faultless with minimum predictable latency for all traffic types. Moreover the cloud network should be aware of flows of various applications. This Book discusses the upcoming traffic dangers arising from cloud computing delivered over public cloud. Along with that the book provides comprehensive solution traffic problems. The Salient Features of the Book are Discussing the currently growing Cloud traffic Requirements to meet the growing traffic needs Current Solutions to traffic Problems Suggested solution Using Technologies like DS field Marking; Use of QoS Protocols; Use of High speed edge Routers; Traffic flow Measurement; Pre Congestion Notification;