To promote a service site, focus on SEO optimization, create valuable content, leverage social media, run targeted ads, engage with local communities and encourage reviews to build trust and visibility.
I had good results adding programmable verification engine called Verify API to help cut down on fake signups and boost trust during the signup process. Made a difference in lead quality for me. Also found that focusing on simple landing pages with one clear call-to-action worked better than overloading with info. I used Google Search Console a lot to test which pages were getting traction and tweaked things from there.