A CDN (Content Delivery Network) is a network of servers distributed across multiple locations worldwide that caches copies of your website's static content, such as images, CSS, and JavaScript files. When a visitor accesses your site, the CDN serves content from the server closest to them, dramatically reducing load times. For Canadian websites, a CDN with edge servers in Toronto, Montreal, and Vancouver ensures fast delivery across the country's vast geography. Popular CDN services like Cloudflare offer free tiers that can reduce your page load times by 40% or more.