Third-party marketplaces concentrate most of the world's online shopping, and the model keeps expanding: social platforms now run marketplaces, US retailers are opening their marketplaces to international shoppers, and Latin America has become the most contested battleground. This FAQ covers how marketplace power is distributed, where the growth is, and what sellers should do about it in 2026.

Commerce media has planted deep roots in Spanish-speaking Latin America (SPLA). Between 87% and 94% of marketers in Mexico, Argentina, Chile, Colombia, and Peru surveyed plan to increase their commerce media investment over the next 12 months, according to new research conducted by EMARKETER for Google.