Denial-of-Service Attacks

Denial-of-service attacks (DoS) attack is an effort to make an application or a website inaccessible.

The DoS causes an excessive flood of data that overloads an application or a website network.

DoS attack comes from a single source.

Distributed Denial-of-Service Attacks

Distributed denial-of-service attacks (DDoS) attack comes from different sources.

Like DoS, DDoS attempts to make an application or a website inaccessible.

The attack can come from more than one attacker or a single attacker that uses bots.

Bots are infected computers that automatically flood your application or a website with excessive traffic.

About Denial-of-Service Attacks Video

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AWS Shield

AWS Shield gives protection against DoS and DDoS attacks.

It provides standard and advanced protection.

AWS Shield Standard protection protects all AWS users at no expense.

AWS Shield Advanced is a paid service.

AWS Shield Advanced provides attack details and can minimize the effects of more complex attacks.

The difference is that DDoS is a  attack