The document discusses the history of digital legacies in three waves from 1999 to the present. The first wave from 1999-2008 saw early services for digital assets after death. The second wave from 2009-2015 included talks on digital afterlife at SXSW in 2009 and the emergence of over a dozen digital legacy services. The third wave from 2015 onward saw Facebook introduce legacy contacts and the discussion of what comes next in digital legacies.