Ask HN: Which platform is the best for launching a product?

The one where your potential customers hang out.

Apart from this, could you suggest any platform?

Paid Product: Spread the World

Check the Google for your preferred customer and then advertise/whatever

Paid Product: Gummy Search-for Reddit

I have no connection to either of these and I bought Spread the World to promote my own stuff.

Which I haven't done yet due to various setbacks last year and just general foolishness.

Product Hunt for techies, Quora for thinkers, Dev.to for developers, LinkedIn for MoneyMen.

HTH