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Literature review for inventory management
Theories relating to inventory management
Literature review for inventory management
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Inventory management is a method through, which a business handles tangible resources and materials to ensure availability of resources for use. It is a collection of interdisciplinary processes including a full circle from the demand forecasting, supply chain management, inventory control and reverse logistics. Inventory management is the optimization of inventories of manufactured goods, work in progress, and raw materials. According to Doucette (2001) inventory management can be challenging at times; however, the need for effective inventory management is largely seeing more as a necessity than a mere trend when customer satisfaction and service have become a prime reason for a business to stand apart from its competition. For example, Wal-Mart’s inventory management is one of the biggest contributors to the success of the company; From the manufacturers’ warehouse to the shelves, the business must orchestrate a symphony of the right products to the right places at the right times. Walmart serves customers and members more than 200 million times per week in retail outlets, online and on mobile devices. The company is able to offer a vast range of products at the lowest costs in the shortest possible time (Chandran, 2001). The main reason for this incredible growth of Walmart is because its distribution centers are highly automated. It is undeniable that Inventory Management is an important key to success at Walmart this paper will discuss the two main methods of Inventory Management used by Wal-Mart: Material Requirements Planning and Just-in Time. Next we write about the technical means of keeping track of inventories like RFID tags. We conclude with discussing how Wal-Mart, one of the world’s largest retailers manages its inventories. Material Requirements Planning
The Walmart is able to keep track of its inventory with the help of a little gadget called, Telson. It scans the bar code which is not just a simple thing but it is almost like an encyclopedia as it tells all the information. The power of information is hidden in a bar code. It is very important as it keeps track of all the sales for example what is being sold, when is it being sold, history, sale prices and trend prices.
The one reason of Walmart’s success is its Supply Chain and Logistics management. The company is saving significant cost by using its information system properly that managed inventory level, orders, sales and other information. Any information can be easily accessible at each store at any
Understanding the changes in the market and the growth of e-commerce prompted the organization to invest heavily in its supply chain management forecasting and management system. The development of a network of distribution centers and Direct Fulfillment Centers to position the company to capitalize on the growing e-commerce market indicate a strong understanding of the need to adapt to changing market forces. The company spent over $300 million on new distribution center facilities in 2014 alone, and continues to expand to maintain efficiency in product movement (Cassidy,
In 1945, Sam Walton opened his first variety store and in 1962, he opened his first Wal-Mart Discount City in Rogers, Arkansas. Now, Wal-Mart is expected to exceed “$200 billion a year in sales by 2002 (with current figures of) more than 100 million shoppers a week…(and as of 1999) it became the first (private-sector) company in the world to have more than one million employees.” Why? One reason is that Wal-Mart has continued “to lead the way in adopting cutting-edge technology to track how people shop, and to buy and deliver goods more efficiently and cheaply than any other rival.” Many examples exist throughout Wal-Mart’s history including its use of networks, satellite communication, UPC/barcode adoption and more. Much of the technology that was utilized helped Sam Walton more efficiently track what he originally noted on yellow legal pads. From the very beginning, he wanted to know what the customers purchased, what inventory was selling and what stock was not selling. Wal-Mart now “tracks on an almost instantaneous basis the ordering, shipment, and delivery of literally every item it sells, and that it requires its suppliers to hook into the system, enabling it to track most goods every step of the way from the time they’re made and packaged in the factories to when they’re carried out store doors by shoppers.” “Wal-Mart operates the world’s most powerful corporate computing system, with a capacity (as of late 1999) of more than 100 terabytes of data (A terabyte is 1,000 gigabytes, or roughly the equivalent of 250 million pages of text.).
Wal-Mart's history is one of innovation, leadership and success. It started with a single store in Rogers, Arkansas in 1962 and has grown to what is now the world's largest - and arguably, the most emulated - retailer. Some researchers refer to Wal-Mart as the industry trendsetter. Today, this retailing pioneer has annual revenues of over $100 billion, 3,000 stores and more than 750,000 employees worldwide. Wal-Mart operates each store, from the products it stocks, to the front-end equipment that helps speed checkout, with the same philosophy: provide everyday low prices and superior customer service. Lower prices also eliminate the expense of frequent sales promotions and sales are more predictable. Wal-Mart has invested heavily in its unique cross-docking inventory system. Cross docking has enabled Wal-Mart to achieve economies of scale which reduce its costs of sales. With this system, goods are continuously delivered to stores within 48 hours and often without having to inventory them. This allows Wal-Mart to replenish the shelves 4 times faster than its competition. Wal-Mart’s ability to replenish theirs shelves four times faster than its competition is just another advantage they have over competition. Wal-Mart leverages its buying power through purchasing in bulks and distributing the goods on it’s own. Wal-Mart guarantees everyday low prices and considers them the one stop shop.
In order to succeed, managers have to realize that they cannot do it alone and they must work together on a daily basis with the whole organizations in their supply chains. Because supply chain management involves all functions within an organization, managers need to know what a supply chain is, why it is important, and the impact of supply chain management on the success and profitability of their organization. Today, Wal-Mart topped the list of the America’s biggest companies on the Fortune 500 list, “with sales of almost $345 billion — more than a quarter of a trillion dollars” (Forbs). Wal-Mart’s supply chain management is becoming recognized as a core competitive strategy.
In the retail stores, managers are complaining of frequent stock outs even though the DC is full of merchandise, which is not moving enough through the supplier, DC, and retail stores. The inventory issue also ties in with transportation problems where accurate lead and delivery times are non-existent. The inventory turnover is not at its full potential because if the DC has merchandise yet the stores are stocked out, the inventory is frozen and will become obsolete.
Wal-Mart's methodology implied continuous, casual participation among stores, appropriation focuses and suppliers and less incorporated control. Besides, the organization's inventory network, by following client buys and interest, permits customers to adequately force stock to saves as opposed to having the organization push products onto racks. (Traub,
Launched by Jeff Bezos, the Amazon.com website started in 1995 and is today considered as one of the most prominent retail website on the internet with a record turnover of US$ 14.87 billion in 2007. Jeff Bezos’s intention was to create an internet based company with the most dedicated product portfolio on the internet where customers could find anything they might want. Amazon’s success is based on technology, services and products (Jens et al., 2003).
Walmart is a retail giant that just about everyone in America has purchased something from them. It is a one stop shop for anything that a person could ever need. Walmart stores can be found anywhere in fact most people are less than an hour drive away from a Walmart store. Walmart’s success has put many companies out of business. The chains success is primarily from low prices and using an information technology system to meet customer demands giving them a competitive advantage. Walmart’s first major use of information technology came in 1975 when the company leased an IBM computer system to track inventory in warehouses and distribution centers. Computers have come a very long way since this time and are used almost everywhere. But in 1975 this was cutting edge technology and gave Walmart the competitive advantage over other retailers. Another thing that Walmart used to be revolutionary in their supply chain was the use of scanning barcodes in 1983. Before barcodes objects had to be read by a skilled cashier. With barcodes all that was needed was a quick scan and the computer would do all the work. This greatly sped up checkout time and made tracking inventory and data collection much faster and easier for both customers and the employees. Since this time it has become an industry standard for products.
In today’s world management must consider a wide variety of factors in order to establish an effective management plan. Wal-Mart Stores, Inc. is the world’s largest company and number one retailer, with this success a company this large needs to not only to look internally for solutions to their management objectives, they must also look outside of their business for additional resources. With the increase of technology and the easy access to virtually any information, Wal-Mart Stores, Inc. must be prepared to react to the multitude of demands made by consumers and suppliers. The rapid change of the retail industry from brick and mortar stores to Internet purchases Wal-Mart Stores, Inc. has been able to stay attractive to the buying public. Wal-Mart Stores, Inc. has accomplished this through a highly sophisticated inventory tracking system that enables the stores, including the Internet, to have in stock exactly what the consumers are looking for. According to Hoover’s Online Wal-Mart Stores, Inc has expanded to about 4,700 stores including about 1,500 discount stores, 1,650 combination discount and grocery stores (Wal-Mart Supercenters in the US and ASDA in the UK) and 532 membership-only warehouse stores (Sam’s Club) (2003). With the introduction of a foreign market their management plan must encompass the rules and regulations of doing business in a foreign country. With the invention of their tracking and identification system, called Radio Frequency Identification (RFID), Wal-Mart Stores, Inc. has exerted control over their entire inventory and enables the workers to identify and locate merchandise more readily for the customers. E-Commerce has increased the ease of purchasing for consumers; Wal-Mart Stores, Inc. has a web site that allows for the ease and convenience of purchasing almost every item in the store over the Internet. Wal-Mart Stores, Inc. has been very innovative in meeting the needs of their clientele, with the Supercenters, it is basically one stop shopping for all of your household and grocery needs, without the hassles of stopping at two stores when you run your errands.
Walmart removed a few of the links in the supply chain by working directly with manufacturers to cut costs and more efficiently manage the supply chain (Lu). Just like Walmart, the distributing company can implement Vendor Managed Inventory (VMI), where real time data lets the distributor know when the shelves need to be re-stocked including the products that need to be replaced. Lu also states that Walmart streamlined supply chain management by constructing communication and relationship networks with suppliers to improve material flow with lower
Walmart is the world’s largest general retailers that operating supermarket, department stores, and grocery stores. I see a strength in it always provides the lower price to its customer every day by its operations. Because of its efficient and effective planning and distribution operations, such as improved logistics system, and introduced new data analysis tools for distribution network efficiency, it can reduce the operating cost to provide customers a lower price.
reaches its capacity management every winter when the volume of demand for products increases dramatically. During this time, sales are faster than the system who automatically calculates sales average every five weeks and orders inventory. Then, the manager of the store has to input manually order to keep up with fast rate of sales during winter time. Walmart 32nd St. relies on its information technology systems to take bests decisions reduce risk, increase efficiency of existing resources and forecast accurately on current sales in order to balance capacity management. Data is the key for capacity management efficiency. Technology plays an important role for system perspective at Walmart 32nd St. where the manager focuses on how the structure behavior of the system determine certain events. Walmart 32nd St. use smart devices that help the manager or supervisors to overview data, and get store records in seconds from certain products or activities. Before managers used to waste time and spend hours and days getting data, doing calculations, and then reaching to conclusions. Now days, the data is very accurate and available on
First, they get their own system to track down their inventory. If they recognize the deficiency in its inventory on their system, they can easily find out how to manage inventory to catch customer’s demands. It lessens the risk of occurrences of their out-of-stock events. Their system also includes supermarket’s supply chain. It does not focus on just inventory, but it can show managers that their all operations are working well by Wegmans’s strategy. Managers always check out its own supply chain and producing department. For example, they can log all their food’s record by mobile computing tablets. Manufacturers and date of manufacture are registered by all records associated with grocery. It can not only reduce staff requirements and expenses, but also gain