Scrum is one of the most widely used Agile frameworks for managing and developing software products. It provides a structured way for teams to work in short development cycles, collect feedback frequently and continuously improve the product.
Unlike a traditional sequential development approach, Scrum divides product development into small cycles called Sprints. During each Sprint, the team selects a set of requirements, develops and tests them, and produces a usable product increment.
This article explains the Scrum framework in detail, including its roles, artifacts, events, workflow, advantages, disadvantages and a practical real-life example.
What Is Scrum? #
Scrum is an Agile framework used to develop, deliver and continuously improve complex products. It is based on an iterative and incremental approach.
In Scrum, work is organized into fixed-length Sprints. At the beginning of a Sprint, the team decides what work it can accomplish. During the Sprint, the team develops and tests the selected work. At the end, the result is reviewed and feedback is used to determine what should happen next.
For example, suppose a company is developing an online shopping application. Instead of waiting six months to complete the entire application, the team can develop login, product search, cart, payment and order tracking through multiple Sprints.
Why Is Scrum Used? #
Software projects often face changing customer requirements, technical problems, uncertain priorities and new business needs.
Scrum provides a framework for handling this uncertainty through:
- Short development cycles
- Frequent inspection of progress
- Regular customer and stakeholder feedback
- Continuous improvement
- Prioritized product requirements
- Frequent delivery of working product increments
Scrum Framework at a Glance #
The diagram represents the continuous nature of Scrum. The product backlog provides work for Sprint Planning, the team works during the Sprint, and the results are inspected and improved before the next Sprint.
Core Components of Scrum #
Scrum can be understood through three major areas:
- Scrum Team – the people responsible for creating the product increment.
- Scrum Artifacts – the important work items used to understand and manage the product.
- Scrum Events – structured activities used for planning, inspection and adaptation.
Scrum Team #
The Scrum Team is a small, cross-functional group responsible for creating a valuable product increment during the Sprint.
The Scrum framework defines three accountabilities:
- Product Owner
- Scrum Master
- Developers
Product Owner #
The Product Owner is accountable for maximizing the value of the product resulting from the work of the Scrum Team.
A major responsibility of the Product Owner is managing the Product Backlog.
The Product Owner works with stakeholders to understand business requirements and helps determine which work should receive priority.
Example #
Suppose a company is developing a banking application.
The Product Owner may prioritize features such as:
- Account login
- Balance checking
- Money transfer
- Transaction history
- Bill payment
If customers report that transaction alerts are more important than a planned profile customization feature, the Product Owner can reprioritize the backlog.
Scrum Master #
The Scrum Master is responsible for helping the team understand and use Scrum effectively.
The Scrum Master helps remove impediments, facilitates Scrum events and supports the Scrum Team and organization in improving their way of working.
Example #
Suppose developers cannot complete a payment feature because the required payment-service credentials are unavailable.
The Scrum Master can help address the organizational or process obstacle so that the development team can continue its work.
Developers #
Developers are the people on the Scrum Team who create the product increment.
Depending on the project, developers may include:
- Software developers
- Test engineers
- UI/UX specialists
- Database engineers
- DevOps engineers
The team works together rather than treating development and testing as completely separate phases.
What Is a Product Backlog? #
The Product Backlog is an ordered list of everything that is known to be needed to improve the product.
Backlog items may represent:
- New features
- Bug fixes
- Technical improvements
- Security improvements
- Performance improvements
- Research or technical work
Example Product Backlog #
| Priority | Backlog Item |
|---|---|
| High | User Registration |
| High | User Login |
| High | Product Search |
| Medium | Shopping Cart |
| Medium | Online Payment |
| Low | Product Recommendations |
The Product Owner continuously orders and updates the backlog based on product needs.
What Is a Sprint? #
A Sprint is a fixed-length period during which the Scrum Team works to create a usable and valuable product increment.
Scrum uses Sprints of one month or less. Shorter Sprints allow teams to inspect progress more frequently and reduce the amount of work exposed to uncertainty.
A typical Sprint includes:
- Sprint Planning
- Development and testing
- Daily Scrums
- Sprint Review
- Sprint Retrospective
Sprint Planning #
Sprint Planning starts the Sprint. The Scrum Team collaborates to establish the Sprint Goal and determine the work that can be taken into the Sprint.
The team considers factors such as:
- Product priorities
- Available capacity
- Technical dependencies
- Previous Sprint experience
- Complexity of the work
Real-Life Example #
Suppose an e-commerce team has a backlog containing 30 items.
For the next Sprint, the team may select:
- User login
- Password reset
- Product search
- Product details
The team then works toward completing these selected items while pursuing the Sprint Goal.
Daily Scrum #
The Daily Scrum is a short event for Developers to inspect progress toward the Sprint Goal and adapt their plan as necessary.
It helps the team identify problems early instead of waiting until the end of the Sprint.
Example #
A developer may discover that an external API required for payment integration is unavailable.
The team can discuss the issue and adjust its plan rather than discovering the problem only during the final days of the Sprint.
Sprint Review #
At the end of the Sprint, the team holds a Sprint Review to inspect the outcome of the Sprint and discuss future adaptations.
Stakeholders may provide feedback about the product and changing business conditions.
Example #
Suppose the team has completed a shopping-cart feature.
During the review, stakeholders may request that users be able to save products for later. That new requirement can be considered for the Product Backlog and future work.
Sprint Retrospective #
The Sprint Retrospective focuses on improving the team’s effectiveness and quality.
The team discusses:
- What went well?
- What problems occurred?
- What should be improved?
- What actions should be taken in the next Sprint?
For example, if code reviews repeatedly delayed completed features, the team may decide to establish a clearer code-review process for future Sprints.
Scrum Artifacts #
Scrum defines three main artifacts:
- Product Backlog
- Sprint Backlog
- Increment
Product Backlog #
The Product Backlog contains the ordered work needed to improve the product.
It represents the broader product work rather than only the work planned for the current Sprint.
Sprint Backlog #
The Sprint Backlog contains the Sprint Goal, the selected Product Backlog items and an actionable plan for delivering the selected work.
It represents the work the Developers are focusing on during the current Sprint.
Increment #
An Increment is a usable, valuable step toward the Product Goal.
Multiple increments may be created during a Sprint, and the work must meet the team’s Definition of Done.
Definition of Done #
The Definition of Done is a shared description of the state that work must reach to be considered complete according to the Scrum framework.
For example, a development team might require a feature to:
- Be implemented
- Pass automated tests
- Pass required code review
- Meet acceptance criteria
- Pass relevant security checks
- Be integrated into the product
The exact Definition of Done depends on the organization and product.
User Stories in Scrum #
Teams commonly express requirements as user stories.
A common format is:
As a [type of user], I want [functionality], so that [benefit].
Example #
As a customer, I want to reset my password so that I can regain access to my account if I forget it.
The story can then be supported by acceptance criteria that describe the expected behavior.
Real-Life Example: Developing an Online Food Delivery Application #
Consider a software company building a food delivery platform similar in functionality to a typical online food ordering application.
Initial Product Vision #
The business wants customers to be able to discover restaurants, select food, place orders and track deliveries.
The initial Product Backlog may contain:
- Customer registration
- Restaurant listing
- Restaurant search
- Food menu
- Shopping cart
- Order placement
- Payment
- Order tracking
- Notifications
- Ratings and reviews
Sprint 1: User Account #
The team focuses on registration, login and password recovery.
At the end of the Sprint, users can create accounts and log in to the application.
Sprint 2: Restaurant Discovery #
The team develops restaurant listing, search and restaurant details.
Users can now log in and discover restaurants.
Sprint 3: Food Ordering #
The team implements menus, food selection and the shopping cart.
Users can now select food and prepare an order.
Sprint 4: Payment and Order Placement #
The team adds payment processing and order creation.
The product can now support the basic ordering workflow.
Sprint 5: Order Tracking #
The team adds order status and tracking functionality.
Stakeholders may then review the feature and suggest improvements based on actual usage.
Continuous Improvement #
After every Sprint, the team reviews the product and receives feedback. New requirements can be added to the Product Backlog and priorities can change according to business needs.
Advantages of Scrum #
Frequent Delivery #
Scrum encourages the creation of usable product increments during Sprints rather than waiting until the entire project is finished.
Better Visibility #
Regular events and artifacts make the team’s current work and progress easier to inspect.
Early Feedback #
Stakeholders can review product increments and provide feedback during development.
Adaptability #
The Product Backlog can evolve as new information and business needs emerge.
Continuous Improvement #
Retrospectives provide a structured opportunity for the team to improve its process.
Early Problem Detection #
Short Sprints and frequent inspection can expose technical and process problems earlier.
Disadvantages and Challenges of Scrum #
Requires Strong Collaboration #
Scrum depends on effective communication among the Scrum Team and stakeholders.
Scope Can Evolve Frequently #
Because priorities can change, the final scope of the product may evolve during development.
Requires Discipline #
Simply holding Scrum meetings does not make a project Agile. Teams need to understand the purpose of Scrum and use its events and artifacts effectively.
Not a Complete Project Management Solution #
Scrum provides a framework for product development, but organizations may still need additional practices for areas such as budgeting, compliance, architecture governance and organizational planning.
Scrum vs Agile #
| Agile | Scrum |
|---|---|
| Broad approach and set of principles | Specific framework |
| Includes multiple approaches | Defines a particular structure for product development |
| Focuses on adaptability and iterative delivery | Provides defined accountabilities, events and artifacts |
| Can be implemented through different frameworks and methods | Is one way of applying Agile principles |
Scrum vs Waterfall #
| Scrum | Waterfall |
|---|---|
| Iterative and incremental | Sequential |
| Work is delivered through Sprints | Development follows defined phases |
| Feedback is collected frequently | Feedback is generally structured around defined project stages |
| Requirements can evolve | Changes after earlier phases may require formal rework |
| Working increments are produced frequently | Major system delivery generally occurs later in the lifecycle |
When Should Scrum Be Used? #
Scrum can be useful when:
- The product is complex.
- Requirements may evolve.
- Frequent stakeholder feedback is valuable.
- The product can be developed incrementally.
- The team can collaborate closely.
- Regular inspection and adaptation are important.
When Can Scrum Be Challenging? #
Scrum may be difficult when a project has highly fixed requirements, limited stakeholder availability, strong external dependencies or organizational constraints that prevent frequent inspection and adaptation.
This does not automatically mean Scrum cannot be used. It means the organization needs to consider whether the framework fits its product environment and constraints.
Common Misunderstandings About Scrum #
Scrum Means No Planning #
This is incorrect. Scrum involves planning at multiple levels, including Product Goal, Product Backlog management and Sprint Planning.
Scrum Means Developers Can Change Anything at Any Time #
Scrum provides a structured framework for managing changes. During a Sprint, the Sprint Goal should not be endangered, and changes should be handled collaboratively by the Scrum Team.
Daily Scrum Is a Status Meeting for Management #
The Daily Scrum is primarily an event for Developers to inspect progress toward the Sprint Goal and adapt their plan.
Scrum Is Only for Software Developers #
Scrum can be applied to complex product development beyond traditional software projects, although it is widely used in software development.
Scrum in Simple Words #
Scrum can be remembered with this simple cycle:
Choose the most valuable work → Build it in a Sprint → Inspect the result → Get feedback → Improve → Repeat.
Frequently Asked Questions #
What is Scrum in Software Engineering? #
Scrum is an Agile framework for developing and managing complex products through iterative Sprints, frequent inspection, adaptation and incremental delivery.
What are the three accountabilities in Scrum? #
The three accountabilities are Product Owner, Scrum Master and Developers.
What is a Sprint? #
A Sprint is a fixed-length period during which the Scrum Team works toward creating a valuable and usable product increment.
What are the three Scrum artifacts? #
The three Scrum artifacts are the Product Backlog, Sprint Backlog and Increment.
What is the difference between Agile and Scrum? #
Agile is a broader approach based on principles for adaptive software development, while Scrum is a specific framework that provides a defined structure for working in an Agile way.
Is Scrum suitable for large projects? #
Scrum can be used for complex products and large organizations, although additional coordination and scaling approaches may be required depending on the organization and product structure.
Conclusion #
Scrum provides a practical framework for managing complex product development through short Sprints, frequent inspection, stakeholder feedback and continuous improvement.
The key concepts to remember are Product Owner, Scrum Master, Developers, Product Backlog, Sprint Backlog, Increment, Sprint Planning, Daily Scrum, Sprint Review and Sprint Retrospective.
For software engineering students, Scrum is an important topic because it connects Agile principles with an actual framework used to organize iterative product development.
