Let's Encrypt alone has issued about 1.5 billion certificates in five years of operation; just storing those in DER form with no indexing or other metadata woul

Let's Encrypt alone has issued about 1.5 billion certificates in five years of operation; just storing those in DER form with no indexing or other metadata would occupy more than a terabyte of storage. (This is also not counting CT precertificates, which are duplicative of the final certificates in their meaningful content but contain different signature data.)