There are many ways to market an online business, and the most effective approach may depend on your business niche, target audience, budget, and goals. However, here are some top ways to market an online business:

1. Search Engine Optimization (SEO): Optimize your website and content to rank higher on search engines like Google, Bing, and Yahoo.

2. Social Media Marketing: Build a strong social media presence on popular platforms like Facebook, Twitter, Instagram, and LinkedIn to reach and engage with your target audience.

3. Pay-Per-Click Advertising (PPC): Use paid advertising options like Google AdWords, Bing Ads, and Facebook Ads to target your audience and drive traffic to your website.

4. Content Marketing: Create and share valuable content (such as blog posts, videos, infographics, and eBooks) to attract and retain customers.

5. Email Marketing: Build an email list of interested subscribers and send regular newsletters, promotions, and updates to keep them engaged.

6. Influencer Marketing: Partner with popular bloggers, YouTubers, and social media influencers to promote your brand and products to their followers.

7. Affiliate Marketing: Recruit affiliates to promote your products and services in exchange for a commission on sales.

8. Video Marketing: Use video content to engage with your audience on platforms like YouTube, Vimeo, and TikTok.

9. Local SEO: Optimize your online presence for local search by claiming and optimizing your Google My Business listing, building local citations, and getting listed in local directories.

10. Online PR: Build relationships with relevant online publications, journalists, and bloggers to gain exposure and media coverage for your business.