What are your strategies of distribution right after the development part is over?

People tend to choose cold emailing or outreach as their first approach. As per my understanding, they do this for first few paid users and talking to them to improve the product itself.

The second common approach is to submit your saas on many different launching platforms such as producthunt for a backlink and improve SEO of the site. Here, people just submit everywhere for a backlink from each site which should not be done. Rather, only submitting on websites which give a backlink should be good to submit as this only is beneficial.

Paid ads. I don't know whether people use this approach in their early days. But, this is a quick visibility method to your intended audience.

What do you think? And what do you do as your distribution method?