TLDR: Shard at a time was replicated over the network, then live traffic was cut over to the Google Cloud replica.
[1] https://blog.evernote.com/tech/2017/02/08/part-1-evernote-se...
TLDR: Shard at a time was replicated over the network, then live traffic was cut over to the Google Cloud replica.
[1] https://blog.evernote.com/tech/2017/02/08/part-1-evernote-se...