Varnish is a reverse caching proxy.

PayPal is an online payments system that supports online money transfers and serves as an electronic alternative to traditional paper methods like checks and money orders.

Google Cloud is a suite of cloud computing services.

Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.

PHP is a general-purpose scripting language used for web development.

Cloudflare bot management solution identifies and mitigates automated traffic to protect websites from bad bots.

Cloud CDN uses Google's global edge network to serve content closer to users.

Google Cloud Storage allows world-wide storage and retrieval of any amount of data at any time.

Shopify is a subscription-based software that allows anyone to set up an online store and sell their products. Shopify store owners can also sell in physical locations using Shopify POS, a point-of-sale app and accompanying hardware.

Snowplow is an open-source behavioral data management platform for businesses.

Mailchimp is a marketing automation platform and email marketing service.