There are several main channels for Amazon off-site promotion:

1. Google search engine. Use Google search engine to promote search ads, such as Google search ads. Set keyword bids and promote Amazon product pages to the top and right of the Google search results page to attract traffic to visit Amazon product pages.

2. Social media. Use social media platforms such as Facebook, Twitter, and Pinterest to promote and publicize, create attractive pictures, short videos, and texts, select Amazon store links for dissemination, and drive social media fans to visit Amazon stores.

3. Other search engines. In addition to Google, you can also place search ads on other mainstream search engines such as Bing and Yahoo to direct traffic to Amazon product pages.

4. Information websites. Place bidding ads or article ads on other e-commerce information websites and product review websites, select Amazon product link resources, and increase exposure and traffic.

5. E-commerce platforms. Open stores on other e-commerce platforms such as JD.com and Tmall International, select some best-selling products to sell on these platforms simultaneously, and add links to Amazon product details pages to achieve traffic diversion and conversion.

6. Video websites. Place video ads on platforms such as YouTube and Douyin short videos, content marketing, and select Amazon store links to promote in video introductions or content. Video marketing can produce good traffic conversion effects.

7. Email marketing. Collect potential customers' email addresses, send product information and coupons by email, select Amazon store links, and guide customers to click to visit Amazon stores and purchase products.

8. Blog outreach. Find blogs and public accounts in related fields for soft article promotion, provide valuable content, and select Amazon product links to implant them, so as to achieve traffic conversion through mutual benefit.

In summary, Amazon can choose a variety of online promotion channels for off-site promotion to achieve higher exposure and more traffic visits. However, it is necessary to avoid homogeneous competition between channels, and choose different social platforms and marketing methods for promotion in a targeted manner to produce the best results.