Yesterday it was officially confirmed that Blizzard servers were under attack.
Blizzard has had serious server problems for some time. Until now, everyone was convinced (and some are still there) that this is a poor optimization.
Yesterday it was officially confirmed that Blizzard was facing DDOS attacks.
Usually, attacks are motivated, in which case it is completely unknown what it could be. It is also possible that this is not an attack directly aimed at Blizzard, but it is taken by the way.
We continue to actively monitor an ongoing DDOS attack against network providers, affecting latency/connections to our games. #BlizzCS
— Blizzard CS – The Americas (@BlizzardCS) September 7, 2019
For whatever reason, players are still kicked out of matches every few days. “Servers down” can be seen on reddit practically every few dozen hours. This applies to Overwatch as well as WoW Classic.