What are the most effective community building tactics you've seen or tried?

Engage consistently and be genuine with others

Video is the most effective medium to gain an audience right now. Initially, posting short videos at a high frequency (thrice a week) will give you instant growth. Once you establish an initial audience, then it's easy to grow by collaborating with similar creators.

This was for a large B2B SaaS software. We used to host monthly get togethers in different cities, where we would talk about new features about to launch as well as being planned. We would also get them to talk about issues they were facing and wins they had. Took tons and tons of cajoling, many a prayer and lots of wine and snacks :) but we were able to do it consistently till Covid hit!

Discord is a cool plateform to engage in continuous discussions with your audience

Follow people who you find interesting, start a conversation, consistency, be honest and nice to people.

Great topic, I would like to hear the best practices

Deep market research, then choosing the right platform and continuous nurturing

share true knowledge to the learners.

Create interesting content!

Forming partnerships with other small brands and communities can really help to push your own brand or community.