Web, domains and email
RFC
Abbreviation for Request for Comments
In short and in plain language
An RFC is a document with a number. Among other things, it sets out rules for the net.
It covers things like email, domains or certificates. A group of experts for the net puts these papers out.
Firms and programs stick to them. That way systems from many firms can work together.
Definition
An RFC is a numbered document that sets out, among other things, technical standards of the internet, for example for email, domains or certificates. These documents are published through the Internet Engineering Task Force. Service providers and software follow them so that systems from different vendors work together.