Give your product to a small group of lucky people in exchange for their help spreading the word.
If your website ranks well on search engines, you'll get a steady stream of visitors to whom you can promote your new product.
One of the most reliable ways to market online, especially in the medium to long term, is to keep making content.
You can also use re-marketing for people who already follow you. Use a newsletter to stay in touch and don't forget to let them know about your Product launch.
When it comes to social media promotion, influencers are at the top of society. Fans of theirs are likely to agree with anything they say.
Customers want immediate responses from businesses, so provide them with a convenient way to contact you at any time.
Users will naturally have many inquiries on the functionality and applications of the system. If it's very novel, you'll have to elaborate on it more.