The objective of the article is to analyze at a theoretical level public marketing in the tourism sector and its impact on business development. After the COVID-19 pandemic, everything indicates that tourism is positioned as a profitable business that has the capacity to boost the development of different dimensions of the economy, hence most advanced countries have developed a tourism marketing policy to promote their different natural, cultural, infrastructure and recreation options. Methodologically it is a documentary and analytical research. The results obtained allow us to conclude that a good marketing strategy is essential when it comes to attracting investments and tourists; however, this strategy is not standard, but will depend on the capacities, resources, hotel infrastructure and, of course, the interests and business development plans of each country. Moreover, the most appropriate way to assess the success or failure of public marketing, that is, that developed by the State and its institutional framework, is to analyze, through concrete empirical evidence, the results of this propaganda strategy with a model very similar to that used in the field of public policy evaluation in general.