Written by Marijn Overvest | Reviewed by Sjoerd Goedhart | Fact Checked by Ruud Emonds | Our editorial policy
What is Supply Chain— Definition, Process + Best Practices
As taught in the Supply Chain Basics for Procurement Professionals Course / ★★★★★ 4.9 rating
Table of contents
- What is a Supply Chain?
- The Importance of Supply Chain
- The 6 Phases of the Supply Chain Management Process
- Supply Chain Process Supporting Activities
- 9 Best Practices in Supply Chain and Supply Chain Management
- 4 Key Supply Chain Cycles
- Importance of Integrating the Cycles
- Template for Analyzing Supply Chain Cycles
- How the Cycles Work Together
- 4 Key Supply Chain Flows
- Conclusion
- Frequently asked questions
- A connected system that links suppliers, manufacturers, distributors, and customers to maximize total value.
- A structure where procurement sources the right materials, at the right time and cost, to keep the chain flowing.
- A value network where products, information, money, and services move together to support customer satisfaction and profitability.
What is a Supply Chain?
A supply chain is the complete system of people, organizations, resources, and activities involved in producing and delivering a product or service to the final customer. It begins with sourcing raw materials and continues through manufacturing, storage, transportation, and distribution until the product reaches the consumer.
Unlike logistics, which focuses mainly on transportation and warehousing, the supply chain encompasses the entire flow of materials, information, and finances across all participating parties.
Procurement plays a central role within the supply chain by determining how materials and services are selected, purchased, and managed. Effective procurement helps control costs, reduce delays, and maintain quality, directly influencing how reliably customer demand is met.
Organizations with well-managed supply chains benefit from lower operating expenses, improved efficiency, and higher customer satisfaction, making supply chain management a critical competitive advantage.
The Importance of Supply Chain
The supply chain plays a critical role in determining how much value is delivered to the end customer, measured by the gap between what customers are willing to pay and the total cost of producing and delivering a product.
An efficient supply chain increases this value by reducing costs while maintaining product quality and availability. Because the end customer is the only true source of revenue, all activities across the supply chain directly influence overall profitability.
Supply chain success depends on how well all participating organizations coordinate their efforts rather than on the performance of a single firm. By strategically managing procurement, production, and distribution, companies can improve responsiveness, control costs, and enhance profitability. As a result, effective supply chain management is essential for sustaining competitive advantage and reliably meeting customer demand.
The 6 Phases of the Supply Chain Management Process
The supply chain management process is a structured sequence of activities that organizations use to plan, source, produce, distribute, sell, and manage returns. Together, these phases ensure products move efficiently from suppliers to end customers while balancing cost, service, and risk.
The supply chain management process is commonly described through the following phases:
1. Planning
Planning defines supply chain objectives and strategies. It includes demand forecasting, resource planning, and risk anticipation. This phase sets the foundation for all other supply chain activities.
2. Sourcing
Sourcing focuses on selecting and managing suppliers. It ensures materials and services are secured under the right conditions for quality, cost, and reliability.
3. Production
Production transforms raw materials into finished goods. This phase includes production scheduling, quality control, and process optimization to meet demand efficiently.
4. Distribution & Logistics
Distribution and logistics manage transportation, warehousing, and storage. The goal is to move products efficiently while maintaining visibility, cost control, and delivery reliability.
5. Sales & Delivery
Sales and delivery focus on order management, customer service, and final delivery. Effective coordination between sales and logistics ensures accurate fulfillment and timely delivery to customers.
6. Reverse Logistics
Reverse logistics manages returns, repairs, recycling, and end-of-life products. This phase supports sustainability, cost control, and customer satisfaction through effective return handling.
How These Phases Work Together:
These phases coordinate the flow of materials, information, and money across the supply chain. When aligned and well managed, they reduce delays, prevent stock imbalances, and improve service levels. When poorly managed, they create bottlenecks, inefficiencies, and higher operating costs.
For a detailed explanation of each phase, including real-world examples, see our full article on Supply Chain Management
Supply Chain Process Supporting Activities
The five main steps are the core stages of a supply chain. And to make the core stages even more effective, supply chains also rely on several supporting processes that run across all steps:
- Inventory management – Determining how much stock to hold and where to position it to avoid shortages and reduce carrying costs.
- Warehousing and distribution – Organizing storage, picking, packing, and shipping to improve speed and accuracy.
- Transportation management – Choosing carriers, routes, and delivery schedules to balance cost and service level.
- Quality management – Ensuring materials and finished goods meet standards to reduce defects, rework, and returns.
- Information flow and coordination – Using systems (like ERP, WMS, or supply chain platforms) to share data across teams and partners.
- Risk management and resilience – Preparing for disruptions such as supplier failures, delays, natural disasters, or sudden demand shifts.
Each step affects the others. For example, poor forecasting can lead to overproduction and excess inventory, while weak supplier management can cause material shortages that delay manufacturing and delivery. That’s why integration is critical: supply chains perform best when planning, procurement, operations, and logistics work as one connected system.
A well-integrated supply chain process improves efficiency, reduces waste, strengthens reliability, and helps organizations meet customer demand consistently.
9 Best Practices in Supply Chain and Supply Chain Management
A strong supply chain doesn’t rely on one department performing well; it depends on how effectively planning, procurement, production, logistics, and partners work as one system. Below are practical best practices you can apply to improve efficiency, reduce cost, and strengthen customer satisfaction.
1. Build end-to-end visibility
Supply chains perform better when teams can see what is happening across suppliers, inventory, production, and deliveries. Visibility helps organizations detect delays early, prevent stockouts, and respond faster to disruptions.
Pro tip:
Create one shared dashboard that automatically shows inventory levels, supplier lead times, and in-transit shipments so teams can spot delays early and act faster.
2. Align teams through integrated planning (S&OP)
Sales and Operations Planning (S&OP) keeps demand forecasts, inventory targets, capacity, and financial goals aligned. This prevents “silo decisions,” such as sales pushing promotions without supply readiness or procurement ordering without demand clarity.
Pro tip:
Hold a monthly cross-functional planning meeting where sales, operations, and finance agree on one forecast, one inventory target, and one capacity plan.
3. Improve forecasting and demand planning
Forecasting affects nearly every supply chain decision, from buying materials to scheduling production and replenishing inventory. Better demand planning reduces excess inventory, improves availability, and lowers overall cost.
Pro tip:
Track forecast accuracy by product category and season, then adjust your forecasts based on past errors instead of relying on gut feel.
4. Optimize inventory management (not just “carry less stock”)
Inventory is a balance between service level and cost. The best supply chains set inventory strategies based on product importance and demand patterns, instead of applying one rule to everything.
Pro tip:
Segment your products into fast-, medium-, and slow-moving items and set different safety stock rules for each group.
5. Strengthen supplier relationships and performance management
Reliable suppliers improve quality, reduce delays, and lower risk. Strategic supplier management also supports better pricing, better lead times, and stronger collaboration during disruptions.
Pro tip:
Use a simple supplier scorecard to review delivery performance, quality issues, and responsiveness every quarter.
6. Reduce risk and build resilience
Disruptions such as supplier delays, transport issues, and sudden demand shifts are common. Resilient supply chains are prepared with contingency plans, alternatives, and predefined response actions.
Pro tip:
Identify your top 10 critical materials and make sure each one has at least one approved backup supplier.
7. Standardize processes and continuously improve
Process consistency reduces errors and delays across order fulfillment, warehousing, procurement, and production. Continuous improvement helps eliminate bottlenecks and waste over time.
Pro tip:
Document your key workflows and track how long each step takes so you can find bottlenecks and remove delays.
8. Use technology strategically (not just “add tools”)
Technology supports better coordination, especially for forecasting, inventory visibility, warehousing, and transportation. The best approach is to digitize high-impact processes first before expanding.
Pro tip:
Start by automating your highest-volume repetitive tasks (such as order entry or inventory updates) before adding more tools.
9. Manage returns and reverse logistics to recover value
Returns affect cost, inventory, customer satisfaction, and sustainability. Efficient reverse logistics helps organizations reduce losses and improve the customer experience.
Pro tip:
Create a simple return checklist that guides staff to quickly decide whether an item should be restocked, repaired, or disposed of.
These best practices work best when they are applied together, not separately. When companies connect planning, procurement, manufacturing, delivery, and returns, they reduce delays, avoid stockouts, and improve profitability across the entire network.
The next sections break down the core supply chain processes and cycles, and explain how the key flows move through them, so you can identify where improvements create the biggest impact.
4 Key Supply Chain Cycles
In addition to the five steps, supply chains are also analyzed from the perspective of four main cycles. Each cycle involves different stakeholders working together to ensure the smooth flow of goods. These cycles are:
1. Customer Order Cycle
This cycle is about managing customer orders from the moment they are placed until they are delivered. It’s focused on ensuring that products are delivered on time and in good condition.
2. Retail Replenishment Cycle
This cycle is responsible for ensuring that retailers have the right amount of stock, replenishing high-demand products efficiently. It helps balance the availability of goods to meet customer demand while avoiding overstocking.
3. Manufacturing Cycle
This cycle involves converting raw materials into finished products. It’s about effective production management, ensuring that resources are used efficiently, quality is maintained, and products are produced on time.
4. Procurement Cycle
The procurement cycle involves sourcing raw materials and other necessary goods. It’s focused on building strong supplier relationships, negotiating contracts, and ensuring the timely delivery of materials needed for production.
These cycles often overlap and work together to keep the flow of goods moving efficiently across the supply chain. Each cycle is interconnected, and inefficiencies in one cycle can affect the entire supply chain.
Importance of Integrating the Cycles
The success of any supply chain depends on how well these processes and cycles are integrated. Misalignment between the cycles can lead to several issues:
- Bottlenecks or delays in one cycle can create backlogs that affect other stages of the supply chain.
- Excess inventory can result when one part of the supply chain operates too slowly or inefficiently, leading to overstocking.
- Stockouts occur when the cycle does not respond quickly enough to sudden changes in demand.
Effective integration of these cycles is essential to reducing inefficiencies, optimizing resources, and improving the overall performance of the supply chain.
Template for Analyzing Supply Chain Cycles
To help improve your supply chain processes, consider using this template to assess each of the four key cycles. Here’s a sample of how you can analyze your company’s supply chain:
Here are the instructions:
- Use the template to analyze your supply chain.
- Identify the strengths and weaknesses of your company’s operations for each cycle (customer order, retail replenishment, manufacturing, procurement).
- Reflect on any challenges or areas for improvement in each cycle and consider how better integration of these processes could improve your overall supply chain efficiency.
How the Cycles Work Together
The four key cycles in the supply chain are deeply interdependent. For example:
- Customer orders drive the need for inventory, which in turn triggers the retail replenishment cycle.
- Manufacturing relies on the procurement cycle to source raw materials on time and in the right quantities.
- Efficient retail replenishment ensures that customer orders can be fulfilled without delay.
By addressing inefficiencies within each cycle, businesses can ensure the smooth flow of goods, reduce costs, and improve customer satisfaction.
4 Key Supply Chain Flows
Supply chains operate through several connected flows that must be managed together:
1. Product and Service Flows
These involve moving physical goods and services through the network, from suppliers to manufacturers to end customers. For instance, Dell’s supply chain includes transporting components to its assembly plants and then distributing finished laptops to retailers.
2. Information Flows
These flows support forecasting, planning, and coordination. Information helps synchronize activities across the supply chain, allowing stakeholders to make informed decisions. For example, companies like Amazon share real-time inventory data with suppliers to optimize replenishment schedules.
3. Financial Flows
These include managing payments, pricing, and cost recovery. Walmart’s payment to a detergent supplier is a financial flow, transferring the cash generated by a consumer’s purchase back through the supply chain.
4. Knowledge Flows
These enable continuous improvement and innovation. Effective knowledge exchange between companies within the supply chain helps identify new efficiencies and solutions, enhancing collaboration.
Each of these flows impacts supply chain performance. Managing them efficiently helps businesses deliver quality products on time, with minimal cost and maximum value to the customer.
Conclusion
A supply chain is the connected system that links suppliers, manufacturers, distributors, and customers to maximize value and profitability. Unlike logistics, which focuses on transportation and storage, supply chain management (SCM) involves the coordination of all processes, products, services, and finances across the entire supply chain.
Procurement plays a key role by ensuring materials are sourced cost-effectively and on time. When procurement aligns with supply chain operations, businesses can reduce costs, prevent delays, and improve customer satisfaction. A strong supply chain requires collaboration and strategic management among all parties involved, ensuring that companies remain competitive and responsive to market needs.
Frequently asked questions
What is a supply chain in procurement?
A supply chain in procurement is the connected network of suppliers, manufacturers, distributors, and customers that moves products, services, information, and money from the source to the end consumer. Procurement ensures that materials and services are sourced at the right time, cost, and quality to keep this system functioning efficiently.
What is the difference between logistics and the supply chain?
Logistics focuses mainly on the transportation and storage of goods. The supply chain is broader and includes procurement, production, distribution, information flows, financial flows, and coordination between all parties involved in delivering value to customers.
Why is procurement important to the supply chain?
Procurement directly influences cost control, material availability, supplier performance, and delivery reliability. Effective procurement prevents delays, reduces waste, and improves customer satisfaction by ensuring that the right inputs are sourced under the right conditions.
About the author
My name is Marijn Overvest, I’m the founder of Procurement Tactics. I have a deep passion for procurement, and I’ve upskilled over 200 procurement teams from all over the world. When I’m not working, I love running and cycling.
