The encryption that makes the padlock in your browser work, scrambling data between you and a website.
Like an armoured courier between you and the website: the parcel travels in a locked case that only the two ends can open.
A two-person bookkeeping firm's contact form ran on plain HTTP. A client filled in a SIN and banking details at a coffee shop. Anyone on that Wi-Fi could have captured the form submission in plain text.
Domain Security keeps the DNS that certificates and TLS rely on accurate. Managed Hosting runs your site with TLS switched on and current.
Example scenario: A small landscaping company had a website on an old host with TLS 1.0 only. Newer browsers started refusing to connect. The owner assumed the site was down. The fix was moving to a host with current TLS, and the site came back for every visitor.
Is TLS the same as the padlock?
The padlock means the browser made a TLS connection with a valid certificate. So yes, the padlock is TLS doing its job.

Every WILDCARD card exists to solve one named problem. Find yours.