CloudFlare - Cloudflare is a global network designed to make everything you connect to the Internet secure, private, fast, and reliable.
Yoast - Yoast offers plugins to improve SEO and optimize web sites and blogs.
Amazon CloudFront - Amazon CloudFront is a content delivery web service.
WP Rocket - WP Rocket offers a caching plugin for Wordpress.
Fastly - Real-time CDN
Wordfence - Comprehensive security plugin for WordPress.