Yet another reason to celebrate 30 years of digital preservation: Web archiving. See https://digitalpreservation.nl/seeds/30-years-of-digital-preservation-issue-3-web-archiving/

Digital Preservation Seeds
30 years of digital preservation, issue 3: web archiving - Digital Preservation SeedsIt was 1996 when digital preservation practitioners worldwide made the first steps on the way to become a profession. We, as digital preservationists, can celebrate 30 years of experience in an evolving domain that was inspired by a tradition of libraries and archives: to preserve heritage material and keep it accessible for the long term. […]