Yes, ambassadors are paid for their services. The exact amount of their salary varies based on several factors such as the country they are serving in, their level of experience, and their rank. In general, ambassadors receive a salary that is comparable to that of a high-ranking government official.

You find a product you like, promote it to others and earn a piece of the profit for each sale that you make.  By leveraging affiliate marketing, brands can easily track ambassadors' and pay them a commission of every sale.