• ## Automatically obtaining SSL certificates by Let's Encrypt using DNS-01 challenge and AWS

This post describes the steps needed for setting up automatic SSL certificates creation and renewal, using Let's Encrypt as the automated Certificate Authority, which provides a well-maintained API.
acme-dns-route53 is the tool to obtain SSL certificates from Let’s Encrypt using DNS-01 challenge with Route53 and Amazon Certificate Manager by AWS. acme-dns-route53 also has the built-in functionality for using this tool inside AWS Lambda, and this is what we are going to do.