Choosing a DSA campaign, you let your advertising platform decide which search queries are relevant to your website. Instead of selecting a list of keywords, you select landing pages or parts of your site; Google or Bing crawls your content, decides when to show your ads and automatically generates your ad headlines depending on the search keywords.
Adspert supports DSA campaigns the same as standard search campaigns. Only the bids are optimized by DSA target rather than by keyword. Bid optimization and bid adjustments are made so that your campaign could reach its goal while generating maximum profit possible. There is more information here: Create targets for Dynamic Search Ads.