What is the principal reason for monitoring keyword rankings over time for product listings on Amazon.co.jp?

The principal reason for monitoring keyword rankings over time for product listings on Amazon.co.jp is to assess the effectiveness of SEO efforts and identify opportunities to optimize product listings and advertising campaigns for improved visibility and sales. By tracking keyword rankings, sellers can determine whether their optimization efforts (e.g., updating product titles, descriptions, backend keywords) are successfully improving their product's position in search results for relevant keywords. Declining keyword rankings indicate that the listing is losing visibility and may require adjustments to the optimization strategy. For example, if a product's ranking for a key keyword drops from the top 10 to beyond the top 30, the seller needs to re-evaluate their keyword targeting and product content to regain lost ground. Also, monitoring keyword rankings helps identify emerging trends and new keyword opportunities. As customer search behavior evolves, new keywords may become more relevant, and tracking keyword rankings allows sellers to adapt their listings accordingly. Regular monitoring enables sellers to proactively adjust their strategies to maintain or improve their product's visibility and capture more sales. Tracking also allows the seller to determine whether competitor efforts are affecting performance.