Amazon marketing service (AMS) is a suite of advertising solutions offered by Amazon that helps sellers promote their products and boost sales on the platform.

AMS uses sponsored ads to help sellers promote their products to Amazon customers based on their search queries, product pages, and interests. Sellers can create campaigns and target their ads to specific audiences and keywords.

The cost of Amazon marketing service varies depending on the advertising solution chosen and the budget allocated to the campaign. Sellers can choose between cost-per-click or cost-per-impression pricing models.

Using Amazon marketing service can help increase visibility, sales, and profitability for sellers. It also provides valuable data insights and analytics to help sellers optimize their campaigns and improve their return on investment.

Sellers can create sponsored product ads, sponsored brand ads, and product display ads. Sponsored product ads are keyword-targeted ads that appear in search results, sponsored brand ads are custom ads that showcase a group of products, and product display ads target customers on related product pages.

Amazon marketing service is available to sellers who have a professional seller account and meet certain eligibility criteria. Sellers must also comply with Amazon's advertising policies and guidelines.

Sellers can track the performance of their campaigns using the Amazon advertising dashboard, which provides data on impressions, clicks, conversions, and other key metrics. Sellers can also use third-party analytics tools to further analyze their data.

Yes, sellers can cancel or modify their campaigns at any time. However, it's important to note that campaigns may take up to 24 hours to update or cancel once a request has been made.