High-defense CDN is, to put it bluntly, a bodyguard for the website to carry a beating. If you do e-commerce or engage in financial services in the United States, you know that if the site is attacked by DDoS, the loss of a few minutes of downtime may be six-figure U.S. dollars to start. Ordinary CDN is like an express relay station to help you cache the content to the node near the user to accelerate access; and high-defense CDN on the basis of the addition of the Golden Bell - not only to bear the impact of massive traffic, but also in the hacker directly strangled in the middle of the road.
When I first helped a cross-border e-commerce company in Los Angeles deploy a high-defense CDN, their boss said, “This money is more real than buying insurance”. Last year during the Black Friday their competitors were hit by 300Gbps DDoS attacks, the site was paralyzed for the whole night, our side because of the use of high-defense CDN with Anycast network, the attack traffic was dispersed to 17 cleaning centers around the world, and the user did not even feel the fluctuations. This value is not a measure of the bandwidth cost, it is a real right to business survival.
Many people think that high defense CDN is to buy bandwidth, in fact, the core in the intelligent scheduling. A truly reliable service provider must be like an old Chinese doctor - real-time monitoring of traffic characteristics, found abnormalities immediately trigger mitigation strategies. For example, AWS Shield Advanced combines WAF rules and machine learning behavioral analysis to identify even small-scale slow attacks at the application layer. The fintech company I work with in Texas relies on this to block CC attacks precisely targeting API interfaces, an attack that ordinary firewalls simply can't detect.
Now high defense CDN also play a lot of new tricks. Some integrated Bot management features, can distinguish between normal users and malicious crawlers; some with edge computing to achieve dynamic update of WAF rules, like Cloudflare's Magic Transit technology can even take over all traffic cleaning without modifying the customer's network architecture. To be honest, without this stuff now do not dare to do online business in the U.S., after all, even small school websites may be targeted by ransom gangs.
Lastly, I would like to say, choose high defense CDN do not look at the advertisement blowing Tbps protection capacity, the key to look at the cleaning ability and response speed. The best choice with 24/7 security team on-site service, really attacked when people can take your traffic mapping directly with the ISP docking diversion. After all, when it really meets a big event, one more second of delay may be a few thousand dollars order to go down the drain. This thing is not a luxury now, it is a necessity for survival in the digital age.
