What is HTTPS?
HTTPS (HyperText Transfer Protocol Secure) is the secure version of HTTP, the protocol used to transfer data between your browser and a website. The "S" stands for "Secure". HTTPS encrypts all data between user and server with SSL/TLS encryption. This means hackers cannot intercept and read the data while it's being transferred.
Practically, this means: When you log into a SaaS tool, HTTPS sends your password encrypted to the server, not in plain text. When you fill out a form with your email, the email address is transmitted encrypted. Without HTTPS, hackers could intercept this data.
HTTPS in B2B Context
HTTPS is not optional for B2B - it is a requirement:
- Legal requirement: If you collect personal data (name, email, phone, company info), HTTPS is legally required in most jurisdictions (GDPR, CCPA, etc.).
- Trust signal: Your visitors will see whether your website uses HTTPS (green lock icon in browser). Missing HTTPS is a major trust problem. Users will leave your website if they see it's insecure.
- SEO ranking factor: Google has confirmed HTTPS as a ranking factor. Websites with HTTPS rank better than HTTP. It's not a mega-factor, but it helps.
- Browser warnings: Modern browsers (Chrome, Firefox, Safari) show prominent warnings on HTTP pages, especially if forms are present. This is terrible for user experience.
Simple: If your website is still HTTP, that's your #1 priority. HTTPS is not optional today, it's a basic requirement.
How HTTPS Works Technically
HTTPS uses three components together:
| Component | Function | Significance |
|---|---|---|
| SSL/TLS protocol | Encryption standard for data transfer | Defines how encryption works |
| SSL/TLS certificate | Digital certificate proving the website is what it claims to be | Prevents man-in-the-middle attacks, proves identity |
| Certificate Authority (CA) | Independent organizations that issue and verify certificates | Creates trust chain: browser trusts CA, CA certifies website |
In short: When you enable HTTPS, you buy an SSL certificate from a CA like Let's Encrypt, DigiCert, or Comodo. You install the certificate on your server. The browser sees the certificate and verifies it with the CA. If valid, the browser shows a green lock icon and users know the connection is secure.
SSL Zertifikat Typen and Kosten
| Zertifikat-Typ | Was es verifiziert | Kosten | Best fr |
|---|---|---|---|
| Domain Validated (DV) | Only that you own the domain | Free (Let's Encrypt) to 100 EUR/year | Blogs, startups, most websites |
| Organization Validated (OV) | That you own the domain AND represent the organization | 100-500 EUR/year | Companies wanting to show trust |
| Extended Validation (EV) | Intensive verification of your business identity | 500-1000+ EUR/year | Financial, healthcare, legal websites (high trust requirement) |
| Wildcard | Covers domain and all subdomains (*.example.com) | 50-400 EUR/year | Companies with many subdomains |
| Multi-Domain (SAN) | Covers multiple domains with one certificate | 100-500 EUR/year | Companies with multiple domain variations |
For B2B companies, Domain Validated (DV) certificate, especially the free one from Let's Encrypt, is recommended. It provides the same encryption as more expensive certificates. The difference is visual (EV certificates show the company name in the browser), but DV is sufficient for most websites.
HTTP to HTTPS Migration - Best practices
When migrating from HTTP to HTTPS, follow these steps:
- Get/buy SSL certificate: Obtain or purchase an SSL certificate. Let's Encrypt is free and works perfectly.
- Install on server: Install the certificate on your server (your hosting provider can help).
- Redirect HTTP to HTTPS: Configure your server to automatically redirect HTTP requests to HTTPS. This is critical so old links don't break.
- Update internal links: Check your website and update all hard-coded HTTP links to HTTPS. Relative links (without domain) are automatically secure.
- Content security policy: Configure Content Security Policy headers to prevent mixed content (HTTPS page with HTTP resources).
- Update Google Search Console: Add the HTTPS version of your website as a new property in Google Search Console.
- Update XML sitemap: Update your XML sitemap with HTTPS URLs.
- Check backlinks: Over time, external links to your domain should redirect to HTTPS. This is automatic, but monitor it.
- Testing: Verify that your website loads properly on HTTPS, has no mixed content errors, and all functionality works.
HTTPS and Page Speed
A common misconception: HTTPS slows down websites. This is not true. The HTTPS handshake during initial connection takes about 100-200ms extra, but that's relatively small. With modern systems (TLS 1.3, OCSP stapling), the performance impact is practically zero.
Actually, HTTPS can make your website faster because:
- HTTP/2 and HTTP/3 protocols are only available over HTTPS and are faster than HTTP/1.1
- Many CDNs and performance tools only work with HTTPS
- Browsers can reuse HTTPS connections better than HTTP
If you have the right HTTPS implementation, your Core Web Vitals should stay the same or improve, not get worse.
HTTPS Certificate Renewal and Monitoring
SSL certificates have an expiration date (typically 1-2 years). When a certificate expires, the browser shows a warning and users cannot access your website. This is bad.
- Enable auto-renewal: Most hosting providers have auto-renewal for SSL certificates. Enable it so you don't forget to renew.
- Set reminders: If auto-renewal is not available, set yourself a reminder 30 days before the expiration date.
- Monitoring tools: Tools like SSL Labs let you check whether your certificate is valid and properly configured.
HTTPS as Technical SEO Foundation
HTTPS is not just a security feature - it's part of the technical SEO foundation. Together with Core Web Vitals, mobile optimization, and site architecture, HTTPS is a building block of a search-friendly website.
If your website is still HTTP, you're losing:
- Ranking points compared to HTTPS competitors
- Trust signals with users
- The ability to use modern protocols (HTTP/2, HTTP/3) and performance tools
- The ability to collect certain data (e.g., referrer from HTTPS to HTTP is not passed)
HTTPS migration should be your #1 priority if you're still using HTTP. Implementation is simple and free (with Let's Encrypt). The benefit is enormous.