Part 2: Knowing your playing field here.
Unfortunately for the introverts out there, communication is an absolute must in team oriented competitive games(which are often the biggest eSports due to the dynamism provided from having multiple players working in conjunction). While there are certainly games that don’t require having a partner/teammates such as real time strategy(RTS) games like Starcraft, fighting games like Street Fighter/SSB Melee, or even speed-running, most big eSports titles will involve communication in some way. Most professional teams in eSports are starting to adopt coaches to make communication as efficient as it can be. South Korea has a leg up on the rest of the world in this regard. Their background in eSports from the Starcraft era, along with their infrastructure and cultural appeal for eSports, has come to fruition in the modern day.
So what is communication?