Supply chain management

Supply chain management (SCM) is the process of planning, implementing, and controlling the operations of the supply chain with the purpose to satisfy customer requirements as efficiently as possible. Supply chain management spans all movement and storage of raw materials, work-in-process inventory, and finished goods from point-of-origin to point-of-consumption. The term supply chain management was coined by consultant Keith Oliver, of strategy consulting firm Booz Allen Hamilton in 1982.

The definition one America professional association put forward is that Supply Chain Management encompasses the planning and management of all activities involved in sourcing, procurement, conversion, and logistics management activities. Importantly, it also includes coordination and collaboration with channel partners, which can be suppliers, intermediaries, third-party service providers, and customers. In essence, Supply Chain Management integrates supply and demand management within and across companies.

Supply chain event management (abbreviated as SCEM) is a consideration of all possible occurring events and factors that can cause a disruption in a supply chain. With SCEM possible scenarios can be created and solutions can be planned.

Some experts distinguish supply chain management and logistics, while others consider the terms to be interchangeable.

Supply chain management is also a category of software products.

Supply chain management problems

Supply chain management must address the following problems:

• Distribution Network Configuration: Number and location of suppliers, production facilities, distribution centers, warehouses and customers.
• Distribution Strategy: Centralized versus decentralized, direct shipment, Cross docking, pull or push strategies, third party logistics.
• Information: Integrate systems and processes through the supply chain to share valuable information, including demand signals, forecasts, inventory and transportation etc.
• Inventory Management: Quantity and location of inventory including raw materials, work-in-process and finished goods.

Supply chain execution is managing and coordinating the movement of materials information and funds across the supply chain. The flow is bi-directional.

Activities/functions

Supply chain management is a cross-functional approach to managing the movement of raw materials into an organization and the movement of finished goods out of the organization toward the end-consumer. As corporations strive to focus on core competencies and become more flexible, they have reduced their ownership of raw materials sources and distribution channels. These functions are increasingly being outsourced to other corporations that can perform the activities better or more cost effectively. The effect has been to increase the number of companies involved in satisfying consumer demand, while reducing management control of daily logistics operations. Less control and more supply chain partners led to the creation of supply chain management concepts. The purpose of supply chain management is to improve trust and collaboration among supply chain partners, thus improving inventory visibility and improving inventory velocity.

Several models have been proposed for understanding the activities required to manage material movements across organizational and functional boundaries. SCOR is a supply chain management model promoted by the Supply-Chain Management Council. Another model is the SCM Model proposed by the Global Supply Chain Forum (GSCF). Supply chain activities can be grouped into strategic, tactical, and operational levels of activities.

Strategic

• Strategic network optimization, including the number, location, and size of warehouses, distribution centers and facilities.
• Strategic partnership with suppliers, distributors, and customers, creating communication channels for critical information and operational improvements such as cross docking, direct shipping, and third-party logistics.
• Product design coordination, so that new and existing products can be optimally integrated into the supply chain, load management
• Information Technology infrastructure, to support supply chain operations.
• Where to make and what to make or buy decisions
• Align overall organizational strategy with supply strategy

Tactical

• Sourcing contracts and other purchasing decisions.
• Production decisions, including contracting, locations, scheduling, and planning process definition.
• Inventory decisions, including quantity, location, and quality of inventory.
• Transportation strategy, including frequency, routes, and contracting.
• Benchmarking of all operations against competitors and implementation of best practices throughout the enterprise.
• Milestone payments

Operational

• Daily production and distribution planning, including all nodes in the supply chain.
• Production scheduling for each manufacturing facility in the supply chain (minute by minute).
• Demand planning and forecasting, coordinating the demand forecast of all customers and sharing the forecast with all suppliers.
• Sourcing planning, including current inventory and forecast demand, in collaboration with all suppliers.
• Inbound operations, including transportation from suppliers and receiving inventory.
• Production operations, including the consumption of materials and flow of finished goods.
• Outbound operations, including all fulfillment activities and transportation to customers.
• Order promising, accounting for all constraints in the supply chain, including all suppliers, manufacturing facilities. distribution centers, and other customers.
• Performance tracking of all activities.

Supply chain management

Organizations increasingly find that they must rely on effective supply chains, or networks, to successfully compete in the global market and networked economy.^[1] In Peter Drucker's (1998) management's new paradigms, this concept of business relationships extends beyond traditional enterprise boundaries and seeks to organize entire business processes throughout a value chain of multiple companies.

During the past decades, globalization, outsourcing and information technology have enabled many organizations such as Dell and Hewlett Packard, to successfully operate solid collaborative supply networks in which each specialized business partner focuses on only a few key strategic activities (Scott, 1993). This inter-organizational supply network can be acknowledged as a new form of organization. However, with the complicated interactions among the players, the network structure fits neither "market" nor "hierarchy" categories (Powell, 1990). It is not clear what kind of performance impacts different supply network structures could have on firms, and little is known about the coordination conditions and trade-offs that may exist among the players. From a system's point of view, a complex network structure can be decomposed into individual component firms (Zhang and Dilts, 2004). Traditionally, companies in a supply network concentrate on the inputs and outputs of the processes, with little concern for the internal management working of other individual players. Therefore, the choice of internal management control structure is known to impact local firm performance (Mintzberg, 1979).

In the 21st century, there have been few changes in business environment that have contributed to the development of supply chain networks. First, as an outcome of globalization and proliferation of multi-national companies, joint ventures, strategic alliances and business partnerships were found to be significant success factors, following the earlier "Just-In-Time", "Lean Management" and "Agile Manufacturing" practices.^[2] Second, technological changes, particularly the dramatic fall in information communication costs, a paramount component of transaction costs, has led to changes in coordination among the members of the supply chain network (Coase, 1998).

Many researchers have recognized these kinds of supply network structure as a new organization form, using terms such as "Keiretsu", "Extended Enterprise", "Virtual Corporation", Global Production Network", and "Next Generation Manufacturing System".^[3] In general, such a structure can be defined as "a group of semi-independent organizations, each with their capabilities, which collaborate in ever-changing constellations to serve one or more markets in order to achieve some business goal specific to that collaboration" (Akkermans, 2001).

Supply chain business process integration

Successful SCM requires a change from managing individual functions to integrating activities into key supply chain processes. An example scenario: the purchasing department places orders as requirements become appropriate. Marketing, responding to customer demand, communicates with several distributors and retailers, and attempts to satisfy this demand. Shared information between supply chain partners can only be fully leveraged through process integration.

Supply chain business process integration involves collaborative work between buyers and suppliers, joint product development, common systems and shared information. According to Lambert and Cooper (2000) operating an integrated supply chain requires continuous information flows, which in turn assist to achieve the best product flows. However, in many companies, management has reached the conclusion that optimizing the product flows cannot be accomplished without implementing a process approach to the business. The key supply chain processes stated by Lambert (2004) are:

• Customer relationship management
• Customer service management
• Demand management
• Order fulfillment
• Manufacturing flow management
• Supplier relationship management
• Product development and commercialization
• Returns management

One could suggest other key critical supply business processes combining these processes stated by Lambert such as:

1. Customer service management
2. Procurement
3. Product development and commercialization
4. Manufacturing flow management/support
5. Physical distribution
6. Outsourcing/partnerships
7. Performance measurement

a) Customer service management process

Customer Relationship Management concerns the relationship between the organization and its customers. Customer service provides the source of customer information. It also provides the customer with real-time information on promising dates and product availability through interfaces with the company's production and distribution operations. Successful organizations use following steps to build customer relationships:

• determine mutually satisfying goals between organization and customers
• establish and maintain customer rapport
• produce positive feelings in the organization and the customers

b) Procurement process

Strategic plans are developed with suppliers to support the manufacturing flow management process and development of new products. In firms where operations extend globally, sourcing should be managed on a global basis. The desired outcome is a win-win relationship, where both parties benefit, and reduction times in the design cycle and product development is achieved. Also, the purchasing function develops rapid communication systems, such as electronic data interchange (EDI) and Internet linkages to transfer possible requirements more rapidly. Activities related to obtaining products and materials from outside suppliers. This requires performing resource planning, supply sourcing, negotiation, order placement, inbound transportation, storage and handling and quality assurance. Also, includes the responsibility to coordinate with suppliers in scheduling, supply continuity, hedging, and research to new sources or programmes.

c) Product development and commercialization

Here, customers and suppliers must be united into the product development process, thus to reduce time to market. As product life cycles shorten, the appropriate products must be developed and successfully launched in ever shorter time-schedules to remain competitive. According to Lambert and Cooper (2000), managers of the product development and commercialization process must:

1. coordinate with customer relationship management to identify customer-articulated needs;
2. select materials and suppliers in conjunction with procurement, and
3. develop production technology in manufacturing flow to manufacture and integrate into the best supply chain flow for the product/market combination.

d) Manufacturing flow management process

The manufacturing process is produced and supplies products to the distribution channels based on past forecasts. Manufacturing processes must be flexible to respond to market changes, and must accommodate mass customization. Orders are processes operating on a just-in-time (JIT) basis in minimum lot sizes. Also, changes in the manufacturing flow process lead to shorter cycle times, meaning improved responsiveness and efficiency of demand to customers. Activities related to planning, scheduling and supporting manufacturing operations, such as work-in-process storage, handling, transportation, and time phasing of components, inventory at manufacturing sites and maximum flexibility in the coordination of geographic and final assemblies postponement of physical distribution operations.

e) Physical distribution

This concerns movement of a finished product/service to customers. In physical distribution, the customer is the final destination of a marketing channel, and the availability of the product/service is a vital part of each channel participant's marketing effort. It is also through the physical distribution process that the time and space of customer service become an integral part of marketing, thus it links a marketing channel with its customers (e.g. links manufacturers, wholesalers, retailers).

f) Outsourcing/partnerships

This is not just outsourcing the procurement of materials and components, but also outsourcing of services that traditionally have been provided in-house. The logic of this trend is that the company will increasingly focus on those activities in the value chain where it has a distinctive advantage and everything else it will outsource. This movement has been particularly evident in logistics where the provision of transport, warehousing and inventory control is increasingly subcontracted to specialists or logistics partners. Also, to manage and control this network of partners and suppliers requires a blend of both central and local involvement. Hence, strategic decisions need to be taken centrally with the monitoring and control of supplier performance and day-to-day liaison with logistics partners being best managed at a local level.

g) Performance measurement

Experts found a strong relationship from the largest arcs of supplier and customer integration to market share and profitability. By taking advantage of supplier capabilities and emphasizing a long-term supply chain perspective in customer relationships can be both correlated with firm performance. As logistics competency becomes a more critical factor in creating and maintaining competitive advantage, logistics measurement becomes increasingly important because the difference between profitable and unprofitable operations becomes more narrow. A.T. Kearney Consultants (1985) noted that firms engaging in comprehensive performance measurement realized improvements in overall productivity. According to experts internal measures are generally collected and analyzed by the firm including

1. Cost
2. Customer Service
3. Productivity measures
4. Asset measurement, and
5. Quality.

External performance measurement is examined through customer perception measures and "best practice" benchmarking, and includes 1) customer perception measurement, and 2) best practice benchmarking.

Components of supply chain management are 1. Standardisation 2. Postponement 3. Customisation

Supply chain management components integration

The management components of SCM

The SCM management components are the third element of the four-square circulation framework. The level of integration and management of a business process link is a function of the number and level, ranging from low to high, of components added to the link (Ellram and Cooper, 1990; Houlihan, 1985). Consequently, adding more management components or increasing the level of each component can increase the level of integration of the business process link. The literature on business process reengineering,^[4] buyer-supplier relationships,^[5] and SCM^[6] suggests various possible components that must receive managerial attention when managing supply relationships. Lambert and Cooper (2000) identified the following components which are:

• Planning and control
• Work structure
• Organization structure
• Product flow facility structure
• Information flow facility structure
• Management methods
• Power and leadership structure
• Risk and reward structure
• Culture and attitude

However, a more careful examination of the existing literature^[7] will lead us to a more comprehensive structure of what should be the key critical supply chain components, the "branches" of the previous identified supply chain business processes, that is what kind of relationship the components may have that are related with suppliers and customers accordingly. Bowersox and Closs states that the emphasis on cooperation represents the synergism leading to the highest level of joint achievement (Bowersox and Closs, 1996). A primary level channel participant is a business that is willing to participate in the inventory ownership responsibility or assume other aspects financial risk, thus including primary level components (Bowersox and Closs, 1996). A secondary level participant (specialized), is a business that participates in channel relationships by performing essential services for primary participants, thus including secondary level components, which are supporting the primary ones. Also, third level channel participants and components may be included, that will support the primary level channel participants, and which are the fundamental branches of the secondary level components.

Consequently, Lambert and Cooper's framework of supply chain components, does not lead us to the conclusion about what are the primary or secondary (specialized) level supply chain components ( see Bowersox and Closs, 1996, p.g. 93), that is what supply chain components should be viewed as primary or secondary, and how should these components be structured in order to have a more comprehensive supply chain structure and to examine the supply chain as an integrative one (See above sections 2.1 and 3.1).

Baziotopoulos reviewed the literature to identify supply chain components.^{[8][9][10][11][12][13][14][15]} Based on this study, Baziotopoulos (2004) suggests the following supply chain components (Fig.8):

1. For customer service management: Includes the primary level component of customer relationship management, and secondary level components such as benchmarking and order fulfillment.
2. For product development and commercialization: Includes the primary level component of Product Data Management (PDM), and secondary level components such as market share, customer satisfaction, profit margins, and returns to stakeholders.
3. For physical distribution, Manufacturing support and Procurement: Includes the primary level component of enterprise resource planning (ERP), with secondary level components such as warehouse management, material management, manufacturing planning, personnel management, and postponement (order management).
4. For performance measurement: This includes the primary level component of logistics performance measurement, which is correlated with the information flow facility structure within the organization. Secondary level components may include four types of measurement such as: variation, direction, decision and policy measurements. More specifically, in accordance with these secondary level components total cost analysis (TCA), customer profitability analysis (CPA), and Asset management could be concerned as well. In general, information flow facility structure is regarded by two important requirements, which are a) planning and Coordination flows, and b)operational requirements.
5. For outsourcing: This includes the primary level component of management methods and the company's cutting-edge strategy and its vital strategic objectives that the company will identify and adopt for particular strategic initiatives in key the areas of technology information, operations, manufacturing capabilities, and logistics (secondary level components).

References

• Kaushik K.D., & Cooper, M. (2000). Industrial Marketing Management. Volume29, Issue 1 , January 2000, Pages 65-83
• Rolf G. Poluha, Application of the SCOR Model in Supply Chain Management. Youngstown, NY 2006, ISBN 1-934043-10-9.
• Haag, S., Cummings, M., McCubbrey, D., Pinsonneault, A., & Donovan, R. (2006), Management Information Systems For the Information Age (3rd Canadian Ed.), Canada: McGraw Hill Ryerson ISBN 0-072-81947-2
• Handfield and Bechtel, 2001; Prater et al., 2001; Kern and Willcocks, 2000; Bowersox and Closs, 1996; Christopher, 1992; Bowersox, 1989

1. Baziotopoulos, 2004
2. MacDuffie and Helper, 1997; Monden, 1993; Womack and Jones, 1996; Gunasekaran, 1999
3. Drucker, 1998; Tapscott, 1996; Dilts, 1999
4. Macneil ,1975; Williamson, 1974; Hewitt, 1994
5. Stevens, 1989; Ellram and Cooper, 1993; Ellram and Cooper, 1990; Houlihan, 1985
6. Cooper et al., 1997; Lambert et al.,1996; Turnbull, 1990
7. Zhang and Dilts, 2004 ;Vickery et al., 2003; Hemila, 2002; Christopher, 1998; Joyce et al., 1997; Bowersox and Closs, 1996; Williamson, 1991; Courtright et al., 1989; Hofstede, 1978
8. Stevens, 1989
9. Ellram and Cooper, 1993
10. Mills et al., 2004
11. Lewis and Talalayevsky, 2004
12. Hedberg and Olhager, 2002
13. Hemila, 2002
14. Vickery et.al., 2003
15. Yusuf et al., 2003

source: http://en.wikipedia.org/