Let's Encrypt, a non-commercial, community-controlled CA that provides certificates free of charge to anyone, about reaching the milestone of a billion generated certificates, which is 10 times more than it was three years ago. 1.2-1.5 million new certificates are generated daily. Number of active certificates 116 million (the certificate is valid for three months) and covers about 195 million domains (150 million domains were covered a year ago, and 61 million two years ago). 81%, 77% two years ago, 69% three years ago, and 58% in the US.
While the number of domains covered by Let's Encrypt certificates has grown from 46 million to 195 million over the past three years, the number of full-time employees has increased from 11 to 13, and the budget has increased from $2.61 million to $3.35 million.
Source: opennet.ru