Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.
LiteSpeed Cache is an all-in-one site acceleration plugin for WordPress.
Mailchimp is a marketing automation platform and email marketing service.
PHP is a general-purpose scripting language used for web development.