Yes, you can manage your own eCommerce fulfillment operation, but it will require significant time and effort on your part. In addition, you will need to purchase or lease storage space, acquire the necessary software and equipment, and hire and train employees to handle all of the tasks involved in fulfilling orders. If you are not able to devote the necessary time and resources to running a fulfillment operation, or if you would prefer to outsource these tasks to a center that specializes in this service, then using a fulfillment center may be the best option for you.