[jayd16]

>Sessions, logins, reports, kills, replays.... those add up.

Yes but those are all shardable, cacheable and mostly asynchronous. The blog post is about how you can build a large world wide game as if it was a single data center with low latency.

[Operyl]

And so is MMO data (cacheable in a ton of cases, shardeable (the article even mentions this one!)).

[jayd16]

Specifically, it mentions how sharding is _not_ ideal for this game.