Selling online is just business
All the rules of doing business and engaging with customers apply! All the ways in which you select a traditional market apply.
Exporting online is still exporting!
You need to know your obligations under the law of the country to which you’re exporting. Understand the duties and tariffs that apply to your product. Be aware of any potential non-tariff barriers to entry and have a strategy for dealing with them. Know what logistic issues you may face such as, for example, needing to have in-country warehousing operations in your target market.