I watched the section from the talk [0] and there's no details given really, other than that it was done as a test of consistency. I've blown so many things up

I watched the section from the talk [0] and there's no details given really, other than that it was done as a test of consistency. I've blown so many things up in production that I'm not sure if I could every pull the trigger on such a large migration [0] https://www.youtube.com/watch?v=IcyaadNy9Jk&t=1670s https://www.youtube.com/watch?v=IcyaadNy9Jk&t=1670s