Hypertext transfer protocol (HTTP) is the application (or program) that a web browser uses to ask a web server for information. When you type “https://creativetrnd.com” into your browser, a domain name system (DNS) helps it reach out to Mailchimp’s web server to return the page you requested. Think of it as the internet version of call and response. HTTPS is the secure (encrypted) version of HTTP called hypertext transfer protocol secure.