Dropshipping is a retail fulfillment method where a store doesn't keep the products it sells in stock. Instead, when a store sells a product, it purchases the item from a third party and has it shipped directly to the customer. As a result, the merchant never sees or handles the product. For dropship business model, seller can start at the lowest capital as he/she does not need to keep inventory. The money can be use as advertising instead.
If you are just starting to embark on your e-commerce journey and would like to start at the lowest capital, do research dropshipping business model. It's easy to get started, low overhead, flexible location, access to big variety of products and no stock keeping.