The regular operation of the network or a server undergoes disruption during an attack to your service. The ip booter has a target and induces a lot of traffic to drop their connection or network.
Operation
They flood the network with fake requests so that the real ones get interrupted, and the traffic coming in will stop the running of your network as it gets flooded. A firm or business will have servers that connect to computers. The company is the one which provides services through their online portals or websites. The customers who access the website will have web pages open.
The ip booter or the attacker comes in through a fake ip address and access your server. When it happens through a single source, the server can block out this system, interrupting its work. So, they get into the server from hundreds of sources. Thus, it leads to a lot of traffic, which interrupts the websites' whole working process. When customers see that they are not getting results of what they ask for, they leave the website. It can cost a business or an enterprise millions in a day.
Disruption
The target is for several reasons. They might dislike you or have a bone to pick with you. The owner of your rivals or someone else might have hired them to get your business down. Fake requests come in successive times all at once to create interruption. The main attacker stands in the front and leads all the others for the output. The joint coordination of all this system is what makes the disruption possible. When the server gets hit from all the sources worldwide, the resources such as the CPU, bandwidth, and memory get used up as they are eaten. The server spends all its resources in dealing with the fake requests that add more traffic. It leads to the ignorance of the real services of computers that connect to the server.
Infecting Malware
When they are preoccupied with all this traffic coming in, the real website will not load. It keeps on buffering for a long time until all the fake requests are dealt with by the server. The booter or the attacker develops software that has malware in them. He distributes it to many websites or as a part of to support feature in the mail. When a user opens a website and clicks on a feature, their computers get this malware. The malware infects computers without the user's knowledge. So, when the attacker sets a target, all these computers have them come together to attack a specific server. Hundreds or even thousands of computers have it in them.
Sum up
The botnet works by following the instructions given by the booter. He has complete control and works them at his own will to meet the demands. He gives commands to the infected system by setting the exact time to initiate the attack. You can only guess the reasons behind the attacks. It may be personal, political, or even economic interest.