Digital goods- A type of goods where inventory places no picture to hold in and can provide high quality services. Such as software products.Physical goods- These products offer choices to the consumer while maintaining the inventory for all the products they sell. Services- Services include getting the work done as per your requirements. Here there is no selling of products to avail the services from it. In fact they focus on selling the services to the consumer's liabilities. Now e-commerce by business model- 1. Drop shipping- Retailers are the intermediates between consumers and shippers. Shippers own an inventory and care is taken to ship the goods to the consumer while retailers are the means through which shippers get sales. 2. Warehousing- Here retailers make sure to have their own warehouse. The product is sourced from the manufacturer and is delivered to the consumer by retailers. 3. Private labeling and manufacturing- The manufacturers are the one who make products, but retailers buy them with a brand name and sell the same to the consumers. 4. White labeling- This is more of retailers purchasing products from the manufacturer for different companies and is offered to the sellers with a brand name. The seller need not worry about the product development and design while he is selling it to consumers.