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Let's Encrypt is a free, automated, and open Certificate Authority (CA) dedicated to public benefit. Operated by the Internet Security Research Group (ISRG), Let's Encrypt provides digital certificates essential for enabling HTTPS (SSL/TLS) on websites in the simplest way possible. Its mission is to promote a more secure web that respects user privacy.

Anyone owning a domain can obtain a trusted certificate at no cost. The process is automated, allowing web server software to interact with Let's Encrypt for certificate issuance and secure configuration, including automatic renewal. Committed to security, Let's Encrypt upholds best practices for TLS, assisting site operators in configuring their servers correctly.

Transparency is a cornerstone, with all issued or revoked certificates publicly available for inspection. Let's Encrypt aims to foster a cooperative environment akin to internet protocols, serving the community without central control. By donating or sponsoring the initiative, organizations and individuals can contribute to a safer, privacy-respecting web experience