Research methodology: this comparison is based on publicly available information: each reseller’s current pricing pages (verified June 2026), their support documentation and knowledge base quality, Trustpilot reviews where available, and user-reported experiences from Let’s Encrypt community forums, Reddit r/sysadmin, and[…]
Blog
How this glossary differs from CA-published glossaries: CA glossaries are written to make certificates sound more complex and more necessary than they are. This glossary is written to tell you exactly what each term means in practice, when it matters,[…]
No. You need one certificate. A standard single-domain SSL certificate ordered for example.com automatically includes both example.com and www.example.com as covered domains. You do not pay extra for the www variant. You do not configure anything special to get it.[…]
