21년 11월
Woowacon 2021
https://woowacon.com/if(kakao)2021
https://if.kakao.com/DevFest University: Devfest GDG Campus 2021 | Festa!
https://festa.io/events/1862HMG Developer Conference
https://hmgdevcon.com/main/LINE DEVELOPER DAY 2021
https://linedevday.linecorp.com/2021/ko/