An SSL (Secure Sockets Layer) certificate is a digital certificate that enables encrypted, secure communication between a website and its visitors, allowing a site to run on HTTPS rather than plain HTTP. Every properly secured website relies on one.
What an SSL Certificate Actually Does
- Encrypts data traveling between a browser and a server
- Confirms and verifies a website's genuine identity
- Enables the padlock icon shown in a browser's address bar
- Is required for securely processing any kind of online payment
Types of SSL Certificates
- Domain Validated (DV) — the most basic, verifies only domain ownership
- Organization Validated (OV) — additionally verifies genuine business details
- Extended Validation (EV) — the most rigorous, involving a thorough business verification process
Getting an SSL Certificate
Most hosting providers today issue a free SSL certificate automatically through Let's Encrypt. Once installed, a plugin such as Really Simple SSL can handle migrating an entire existing WordPress site from HTTP to HTTPS with minimal manual configuration.
Why It's Non-Negotiable Today
Beyond basic security, SSL is a confirmed Google ranking factor, and modern browsers actively display prominent warnings on any site still running without one — making it one of the most fundamental, non-negotiable pieces of website infrastructure today.
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