The difference between advanced anti DDoS server and advanced anti DDoS ttcdn depends on the defense ability. The actual defense effect of wdcdn is better than that of advanced anti DDoS server. 1. Wdcdn adopts multiple nodes, which can handle the opening speed of Internet client websites in different regions, handle the concurrency, and alleviate the working pressure of website server 2. Hide the source IP, so that the attacker can't find the source IP and can't attack the source server immediately, making the attack hit the ttcdn node 3. Each node of wdcdn is a stand-alone defense, and each node has a matching defense of package content defense. Unless the attack exceeds the package content defense, the website is not vulnerable to harm, and security measures can be obtained for the customer's website. The advanced anti DDoS server adopts stand-alone defense or cluster defense, and the attack is immediately hit on the source server. The attack will cause the network bandwidth CPU running memory utilization of the server to reach 100%, and then immediately endanger the source station, resulting in problems such as blocking, unable to open the website and poor browsing. The advanced anti DDoS server adopts stand-alone defense or cluster defense, and the attack is immediately hit on the source server. The attack is likely to cause the network bandwidth and CPU memory utilization of the server to reach 100%, and even endanger the source station at the same time, causing problems such as blocking or unable to open the website and browse. CDN defense is to improve a new layer of network structure in the current Internet, push the site information to the "edge" of the Internet closest to customers, so that consumers can obtain the required content in the principle of proximity, deal with the Internet congestion and the confusion of being attacked by DDoS in the same industry, and improve the response time of customers browsing the website. Technically, it effectively solves the problem of slow response time of customers browsing website caused by factors such as small server bandwidth, large number of customers browsing, uneven node separation and so on.