Paid search results are ad placements in search engines like Google, labeled with the “Ad” identifier. Users bid for these placements in auctions, “pay per click” is a bidding system where businesses pay for each click they receive from that search engine.
Each ad placement for different search queries will cost a unique amount based on the popularity and intensity of bidders. Generally, ad spend is budgeted by the day, and tools like Google Ads will manage placement for you.