What is a Sectigo RSA Domain Validation certificate?

Understanding key terminology is key to understanding SSL/TLS

For many people, SSL/TLS certificates are an afterthought. A once-every-year-or-so type of product that doesn’t need a whole of explanation beyond “how is it installed?” That’s why seeing terms like “Sectigo RSA Domain Validation” can be a little bit confusing. You might know what RSA is, maybe you know about Domain Validation. But not well enough to explain it to anyone.

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