Content Delivery Networks (CDNs) can serve your website content from localised servers to your website visitors. What that means in business terms is your clients should recieve your content faster!
CDNs also allow you to protect yourself from attack (Denial Of Service) by distributing your traffic across many servers. Many providers, such as cloudflare also offer a Web Application Firewall (WAF) to better protect you from threats.
Consider a CDN for your website and defend against attacks, proactively.