Microsoft Azure Architect Design (AZ-301) Practice Exam

Azure Content Delivery Network (CDN) enhances global application availability by distributing content to users through a network of strategically placed servers around the world. This distributed network reduces latency by serving content from a location close to the user, improving load times and enhancing user experience. By caching static content such as images, videos, and scripts at edge locations, Azure CDN ensures that even if the origin server experiences high traffic or downtime, users can still access cached content. This capability is vital for applications with a global audience, as it provides a more reliable and responsive service.

In contrast, options like dedicated hosting plans and Azure Load Balancer, while they provide specific benefits for hosting and traffic distribution, do not inherently ensure global availability in the same way that a CDN does, as they do not focus on content caching and geographic distribution. Azure Site Recovery, on the other hand, is focused on disaster recovery and business continuity rather than enhancing everyday availability. Thus, for improving global availability specifically, Azure Content Delivery Network is the most suitable choice.