I see a lot of resources on how to use dropshipping; but I have my eyes on the other side, sourcing from a few select manufacturers, and providing dropshipping. Obviously, this is not low-investment side-income stuff, more like a full-time effort with some amount of capital involved (which I will figure out later). If I end up committing to this, I will focus on high-quality items that will cater to a niche.
But what I can't find easily is the specifics on how to make my dropshipping avaliable to ecommerce stores. What are the channels, do I need to write my own APIs? Can I leverage existing APIs for this? Any thoughts / research / resources you would like to share on this?