HTTPS means the same thing as SSL. The full tech terms are quite a mouthful: Hypertext Transfer Protocol Secure, and Secure Socket Layer. But what it all adds up to is encryption protection.
All encrypted websites have the ‘https://’ and padlock icon in most browsers. If you only see ‘http://’, it means the connection between your browser and the website you’re accessing is not secured.
Encryption security is what protects the information people type in on websites, from their email address to their credit card details when shopping. That’s why Google flags sites that don’t have an SSL Certificate as ‘Not Secure’.