Search Engine Optimization is one of the best and recommended way for website promotion. It is the way to score high conversion rate for a business.

If you are looking for the best option for web promotions, then I would like to suggest that

1) SEO
2) Marketing via social media
3) Video marketing is the most effective method of web promotion.

What is the best option for web promotion?
 

Proven Ways To Market Your Website
Search engine optimization. ...
Blogging and guest blogging. ...
Pay per click (PPC) ...
Retargeting. ...
Facebook ads. ...
YouTube. ...
Email marketing. ...
Word of mouth (forums/Facebook fan pages, etc.)

What is the best option for web promotion?
 

SEO, or search engine optimization, is one of the most effective ways to promote a website, as it helps improve a site's ranking on Google and other search engines.

What is the best option for web promotion?
 

Offer loyal customers an exclusive preview. Your loyal customers are a key part of how to promote your product, because they are most likely to not only buy it, but also promote it to their networks. This can take the form of a private, in-person or virtual pre-launch party, an online tour, preview, or demo.

What is the best option for web promotion?
 

Solidify your website SEO.
Take advantage of email marketing.
Start a blog.
Try guest blogging.
Harness the power of social media.
Submit your site to online directories.
Post on forums.
Reach out with outreach marketing.