How do you promote a business on Reddit without getting banned or downvoted?

Redditors hate aggressive self-promotion. How do you share your expertise or products authentically without coming off as a pushy marketer?

I’d answer the question fully, share specific advice, and mention my product only when it directly addresses the problem. Then I mention my product subtlely without the need to promote it. Just present your product or brand as the solution to the problem directly. No need for fluff or advertising.