The principle of authentication is the same: keys are exchanged between the browser and the web server, which are compared in a so-called handshake. If the keys match, the communication is encrypted. The strength of this encryption depends on the web server settings, but is usually so high that it can only be cracked with massive effort.

However, Let's Encrypt does not currently offer extended certificates for organisation validation (OV) or extended validation (EV). This means that although the normal encryption note is available in the address line via Let's Encrypt certificates, the so popular green address line cannot be implemented. Another difference is that Let's Encrypt certificates only have a term of 90 days and must therefore be regularly renewed. A paid SSL certificate usually has a term of twelve to 36 months.

MOORnetworks supports Let's Encrypt in all platform services through an integrated interface, through which the customer can set up HTTPS encryption, request and install certificates with two clicks, within 20 to 30 seconds.