The first thing you can do is to search online in different search engines (not just Google), business directories, ecommerce websites and social media platforms to see if anyone else is already promoting or discussing a similar idea. Make sure you search descriptively, not just by name. For instance, describe what your idea does.
If you can’t find a similar idea, then it’s time to dive deeper. Next, search through patent databases to determine if similar ideas have already been patented. The same goes for trademarks, especially if you plan to use a specific name or brand identity for your business.
But what if you’re not the first? It’s important to note that even if you discover that someone else has already implemented a similar idea, it doesn’t necessarily mean that your idea is not viable. However, you must ensure that your idea is better. What distinguishes your idea from the existing one? Write this down and continue developing your idea.