Evan Lin presents on using Golang to build smart instant messaging bots. The key points covered include:
1. What instant messaging bots are and how they work using a webhook to an HTTPS server.
2. Why Golang is a good choice for building bots, highlighting its speed, concurrency, and tooling.
3. Steps to build bots for Line and Facebook Messenger, deploying examples to Heroku for easy hosting.
4. Using natural language processing with LUIS to build smarter bots that can understand intent and entities.
5. The future of bots interacting directly without APIs and their potential uses for customer service and businesses.