Perform literature research on the technologies that are used in modern enterprise networks. These technologies are Distributed Denial of Service Protection, Load Balancing and Cloud Virtualization. There are multiple providers of such services, some examples, Amazon AWS, CloudFlare and Akamai Technologies. Critically discuss these technologies concerning the scalability and transparency of communication, providing examples. Identify two or more commercial risks arising due to the failure of such cloud services. There are two roles: risk assessor and upgrade engineer. The upgrade engineer must review the technologies from a benefit point of view, whilst the risk assessor evaluates the potential threats.