Which of the following is NOT an example of a benefit provided by a CDN?

Vertical scalability, often referred to as "scaling up," involves adding more resources (such as CPU or RAM) to a single server to handle increased load. This approach can be limiting because it relies on a single machine and can reach a point where it cannot be further upgraded effectively.

In contrast, CDNs (Content Delivery Networks) primarily enhance content delivery efficiency and improve site performance by distributing content across multiple edge locations. The benefits provided by a CDN include:

• Improved customer experience, achieved through faster content delivery by serving cached content from a location closer to the user.

• DDoS protection, which is a critical feature in safeguarding against distributed denial-of-service attacks by absorbing and dispersing excessive traffic across the CDN infrastructure.

• Horizontal scalability, which allows adding more servers or nodes to distribute the load and manage spikes in user demand more effectively.

Therefore, vertical scalability is not a characteristic benefit of a CDN, as CDNs focus on optimizing content delivery through horizontal scaling methods instead.