Merchants building businesses on giant marketplaces often have to think inside the marketplace’s box, but Medusa, a one-year-old e-commerce startup from Denmark, is going after e-commerce platforms, ...

In the late 1990s, I built my first e-commerce site with a do-it-yourself tool, and it worked. The sales started coming in. What I did not realize at the time was that the site lacked several elements ...