system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does YouTube handle millions of video notifications at once, while Discord can barely send out a couple thousand @everyone?
gpt
YouTube is owned by one of the largest tech companies on the planet. Discord was started 7 years ago and, while popular, is quite small in comparison.  

Google has 23 data ~~servers~~ centers worldwide, likely with *billions* of dollars of equipment in each one, Discord is worth around $15 billion total. They might have worldwide servers through cloud services, but they can't compete with what Google has access to.