CDN Included or Pay Extra? A WordPress Agency's Real-World CDN Case Study

https://wiki-spirit.win/index.php/Why_your_WordPress_site_feels_slow_%E2%80%94_and_how_managed_WordPress_actually_fixes_it

How a WordPress Agency Blew $18K on CDN Fees in Year One In year one a boutique WordPress agency grew fast: 120 client sites, several mid-traffic ecommerce stores, and a handful of lead-generation sites that spiked from marketing campaigns