They are those companies have paid to appear at the top of search results (above those that earned their page-one spots organically.)The little box next to their title reading “ad” but many consumers are still unaware that these are advertisements. The ads feel native and fit into the results. In order to be less obtrusive.
Paid search has been popular recently as organic search has become more competitive.Rather than having to wait for your SEO to build up. One can also pay to get seen on top searches of Google immediately. The amount of money spent on paid search is very huge.