What Is SSL (Secure Sockets Layer)?
SSL (Secure Sockets Layer) is the original encryption protocol used to secure communications between web browsers and servers. While SSL has been technically superseded by TLS (Transport Layer Security), the term 'SSL' is still widely used colloquially to refer to website encryption and SSL/TLS certificates.
An SSL/TLS certificate enables HTTPS connections, displaying the padlock icon in browsers and encrypting data in transit. Certificates are issued by Certificate Authorities (CAs) and can be obtained for free through Let's Encrypt or purchased from commercial CAs.
In modern usage, 'getting an SSL certificate' and 'enabling HTTPS' are essentially the same thing. Most hosting platforms and CDN services (like Cloudflare) provide SSL certificates automatically at no additional cost.
Why This Matters for Startups
An SSL certificate is essential — browsers flag sites without HTTPS as insecure, and Google uses HTTPS as a ranking factor. The good news: you probably don't need to do anything. If you're using Cloudflare, Netlify, Vercel, or most modern hosting platforms, SSL is handled automatically. Just verify that your site loads over https:// and that http:// requests redirect to https://. If your hosting doesn't provide automatic SSL, Let's Encrypt offers free certificates.
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