Domestic marketing involves marketing practices within a company's home country, while international marketing involves planning, pricing, promoting, and distributing goods and services across national borders. Some key differences are: 1) Domestic marketing usually involves exchange in the same currency, while international marketing involves different currencies. 2) International marketing is subject to more government rules/regulations and interference compared to domestic marketing. 3) International trade faces more barriers like tariffs and non-tariff barriers, while domestic marketing generally does not have such restrictions. 4) International marketing must account for different languages and cultures, whereas domestic marketing usually involves one language/culture.