A distributed denial-of-service attack (DDoS attack) floods a specific server or network with constant malicious traffic, overwhelming the system and preventing access to services of your legitimate traffic.
It’s “distributed” since it originates from different sources simultaneously. It can be hundreds to thousands of computers worldwide infected with viruses and this army is called a “botnet.” With their ringleader spearheading the operation, the attack could last for hours or even days.
With your servers’ resources, such as CPU, memory, and network bandwidth, being exhausted during the attack, the legitimate computers can’t access your site, or will take a long time to load it. This downtime compromises your products’ stability, reliability, and customer confidence.