A key difference between the promotional programs of national tourism offices (NTOs) and their counterparts at the state, provincial, and territorial levels (STOs) is:

STOs focus more on domestic travelers than international

Explanation:

As its name states, the National Tourism Offices (NTOs) are more focused on foreign travelers, people who come from other countries such as Spain, Germany, Italy, etc., as it's expected to know how to treat people who have different cultures and customs so they feel welcome.