June 2025
Beginner to intermediate
1180 pages
37h 48m
English
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24.3 Let's Encrypt
Since 2016, the Let's Encrypt organization (https://letsencrypt.org) has been offering free certificates. These certificates are very widely used. By mid-2023, there were over 300 million active certificates from Let's Encrypt in use. At the same time, there are now other providers for free certificates, such as ZeroSSL. So the obvious question is, “Why spend any more money on third-party certificates?” Let's Encrypt comes with two major limitations: For one thing, the certificates are only valid for 90 days. To get around this disadvantage, the system must be set up in such a way that the certificates are automatically updated on a regular basis. (This is not difficult.) On the other hand, the certificates from Let's Encrypt ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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