Drop shipping is a supply chain management method in which the retailer does not keep goods in stock but instead transfers customer orders and shipment details to either the manufacturer, another retailer, or a wholesaler, who then ships the goods directly to the customer. As in retail businesses, the majority of retailers make their profit on the difference between the wholesale and retail price, but some retailers earn an agreed percentage of the sales in commission, paid by the wholesaler to the retailer.
To enable customers to review items similar to those they can purchase, a drop shipping retailer might keep "display items" on display in a physical " brick and mortar " store, or provide a product catalog as either hard copy or online, or even some combination of all these methods (" bricks and clicks ").
Retailers that drop ship merchandise from wholesalers can take measures to hide this fact or keep the wholesale source from becoming widely known. This can be achieved by "blind shipping" (shipping merchandise without a return address), or "private label shipping" (having merchandise shipped from the wholesaler with a return address customized to the retailer). The wholesaler might include a customized packing slip, including details such as the retailer's company name, logo, and contact information.
Drop shipping can occur when a small retailer (that typically sells in small quantities to the general public) receives a single large order for a product. Rather than route the shipment through the retail store, the retailer might arrange for the goods to be shipped directly to the customer. Drop shipping is also very common with big ticket items like steel buildings, where the retailer will take a deposit and have the steel shipped directly to the buyer's building site from the supplier's manufacturing facility.
Many sellers, including those on online auction sites, also drop ship. Often, a seller will list an item as new and ship the item directly from the retailer or wholesaler to the customer or highest bidder. The seller profits from the difference between the sales of the product or winning bid and the wholesale price, less any selling and merchant fees, or shipping fees.  On eBay there is not a clear rule about drop shipping. According to their policy, this practice should be avoided, as sellers should always own the products before publishing them. This is to prevent bad buyer experiences and to guarantee safe transactions. However, it seems that eBay is tolerating drop shipping as long as the seller can guarantee good service.
One effect of drop shipping is that customers who receive a drop-shipped package will realize that they overpaid for the item on eBay, return the item to the manufacturer, then reorder the identical item directly from the manufacturer. The cost of processing the return and the loss of the unsellable returned product can result in significant losses to the manufacturer. 
An emerging trend in the drop ship business is private label drop shipping, in which a manufacturer produces a custom item for a retailer and drop ships it. The range of private label drop shipped items available includes, for example, simple keepsakes, apparel with custom logos, pictures, and customized formulations for vitamins and nutritional supplements.
Major drop shipping suppliers and fulfillment services are primarily based in the USA. Since 2006 many drop ship companies  have emerged in China, many of which offer wholesale and drop shipping services to both companies and individuals.  This is largely due to the increasing ease of e-procurement and the growing part that the internet is playing in e-commerce. Drop ship suppliers based in China have increasingly been able to compete with same-country distributors because of improved logistics for small packets and the easing of trade barriers.  AliExpress dropshipping is the new trend. 
Two significant benefits of drop shipping are a positive cash-flow cycle and the elimination of upfront inventory. A positive cash flow cycle occurs because the seller is paid when the purchase is made. The seller usually pays the wholesaler using a credit card or credit terms. Therefore, there is a period of time in which the seller has the customer's money, but has not yet paid the wholesaler.
Drop shipment can also be an advantage in some transactions since it (can) obscure the actual shipper from the final receiver, thus preserving a middleman's role by preventing direct communication/awareness between the original seller and final buyer, without requiring a middleman to bear the costs/. delay in physically taking in the goods, repackaging, relabeling, etc.
1. Minimizes risk
Apparently, have numerous advantages, but this one is great. Normally, if you want to start a business, then it costs you an arm and leg to acquire large inventory but, if you are tight on budget, then you can’t give winds to your aspirations. Drop shipping or turnkey business model gives you an opportunity to accomplish your aspiration without being worried about inventory. Drop shipping offers you an inexpensive way to acquire inventory which is not possible otherwise. Therefore, starting this business is not risky.
2. Saving Time and Money
The drop shipping business saves your time and money in a great way because you need not to maintain a warehouse and care about the shipping. This will be taken care of the suppliers. You just need to promote products and derive sales to obtain your profit. Moreover, there is no need to manage your stock and inspect the stock levels. This all makes your job quite easily. Due to these benefits of drop shipping, it is being considered highly relevant for those who are looking for home based business.
Drop shipping offers you diversity which is not possible in having your own store. Suppose, you have spent your money buying products of a particular niche, unfortunately, it is not bringing desired results even though, you have to continue with that niche or products until it gets sold out. This can bring losses to you in many cases. On the other hand, if you are into drop shipping or turnkey business, you have diverse options to choose products from and in case, if a particular product is not deriving you optimum sales, you can easily switch to other items.
4. Flexible Location
Drop shipping allows you to sell products from anywhere. Suppose, if you want to sell toys from particular suppliers who are based in any other city or country, you can sell it easily. All you need to do is contact the supplier and fix the deal with him and you are all set to go. Thus, drop shipping provides you to work from anywhere without any headache.
5. Immediate Profit
If you are good at selling and if you have chosen the right product which converts well, then the sky is only limit. Moreover, this is the only business model available that does not require any investment and bring profit if the strategy is executed properly.
6. Negligible Investment
If you are looking for the passive income sources online, but not getting any valid source, then go for drop shipping. This business requires near to no investment. You just need to have a website and good writing and selling skills that is all about selling products online. Apart from the website, you can also run a promotion on various platforms such as Google Adwords, Facebook, Email marketing and Bing ads to derive traffic from website and sales.
Some risks such as back ordering may occur when a seller places a shipment request with a wholesaler, but the product is sold out. Back orders may be accompanied by a long wait for a shipment while the wholesaler waits for new products, which may reflect badly on the retailer. A good wholesaler will keep retailers updated, but it is the business owner's job to be aware of the quantities that the wholesaler has available.
Drop shipping has also featured prominently in some Internet -based home business scams.  Scam artists will promote drop shipping as a lucrative "work from home opportunity". The victim who buys into this scam will be sold a list of businesses from which drop shipment orders can be placed. These businesses may not be wholesalers, but other businesses or individuals acting as middlemen between retailers and wholesalers, with no product of their own to sell. These middlemen often charge prices that leave little profit margin for the victim and require a regular fee for the retailer's usage of their services.
Knock off name brand products being sold by drop shipping wholesalers  is another thing to watch out for. While some of these products may look genuine, generally you will know by the extremely high-profit margins available on them. If you find yourself questioning whether a product is a knock off or not look up the product on the manufacturer's website and visually compare it if you notice colors, styles or other physical characteristics that don't match those of the manufacturer it is probably a knockoff. You can take this one step further by contacting the manufacturer and asking if the supplier you are considering purchasing from is authorized to sell their products. Selling knock-off products could destroy your eCommerce reputation and possibly ruin your drop shipping business, it could also cause quite a bit of legal problems.
The converse of drop shipping is will call, where a customer picks up directly from a wholesaler rather than via a retail shop.
As with drop shipping, affiliate marketing allows a blogger, website owner, or another form of internet content owners commonly known in that industry as publishers or partners, to list or promote a product or advertisement campaign on behalf of a third party brand typically called merchants. In affiliate marketing, the product or advertisements are not owned or designed by the affiliate publisher and often the affiliates and their content must adhere to contractual standards detailing how the brand and promotion may be represented. Affiliates often may not imply in their marketing that they own or represent the brand. In contrast with drop shipping, the potential customer, often called a lead, is typically redirected to the third party merchant's own website, sales portal, or shopping cart. Thus in traditional affiliate marketing transactions, the lead is redirected to the merchant's own sales campaign and so are only processed directly through the third party's network. Therefore, an affiliate commission is generated for leads and sales occurring directly on the third party merchant's website and would not be combined with any processes or commissions arising from a drop shipping relationship.