Too Long; Didn't Read
The Slack Events API is hosted on AWS Lambda. The bot is a custom Slack tool for onboarding new members in the community Slack. It's easy to implement, developer-friendly, and works on top of HTTP1/1.1. Websocket is an excellent protocol, but it's built on-top-of HTTP/1 and keeps the connection open. In the next part of the blog post, I’ll tell you how to build this bot using Slack API.