Competitive analysis is an important part of affiliate marketing tools. Software that you install on the hard drive and run from your computer (e.g. Dominator Competition) or software that you run on your server or for you hosted software (such as Google) install cash detectives or covert profits.
You can try this software for your business. Each software selection does a slightly different job than the others but allows you to monitor the keywords and ads that appear for that ad over a certain time. You can follow this link to gather more info about competition analysis software for Amazon Professional Sellers.
You can also track which affiliates advertise products and track their advertisements. The longer you run competitive analysis software, the more you learn.
This information can be very valuable because if a particular ad appears every day and the landing page looks decent enough, you can almost guarantee that the ad will function at least smoothly. Most "theories" of the competitive analysis suggest that this will be a profitable advertisement, but this must be done carefully.
Ads and campaigns that you haven't seen in a long time are also very valuable. This should give you a very clear idea of what you shouldn't do.
Competitive analysis software is very valuable for each partner. Entering the market without competitive analysis is not good, as a long journey without a map if you don't know-how.