Waterfall methodPortfolios and portfolio management

Introduction to the waterfall method

The waterfall method of project management is a PRINCE2 Agile book reviewsequential approach to a Simon Buehringproject19 Feb 2026. The phases of this methodology are completed one after another in the following order:

• Requirements elicitationRead our review of the official PRINCE2 Agile guidance manual and understand how it combines structured project management with Agile flexibility.
• Design
• Implementation
• Verification
• Maintenance.

Each of these steps should be completed and fully documented before the next step is taken. This linear approach is most known for the following characteristics:

• Rigid structure
• Comprehensive documentation
• Clear milestonesDeveloping your project management career
• Predictable timelines.

Waterfall method is the opposite of the Simon BuehringAgile approach19 Feb 2026. It is less flexible and works on a fixed scope. Traditional waterfall method was not designed to be iterative like the Agile methodology. Waterfall project is best for software products and projects that have well-defined requirements that will not change much. It is good for software with certain endpoints and certain regulatory compliance checks needed for the software to function.

Waterfall phasesDeveloping your project management career takes strategic planning. Discover actionable strategies to advance in the field by reading this article.

Waterfall is a structured

• Prepares the production environment
• Migrates data if needed
• Deploys the system to users
• Provides user training and documentation.

Maintenance and support

After the system is deployed, ongoing activities include:PRINCE2 exam pass rates

• Monitoring system performance
• Addressing user-reported issuesSimon Buehring
• Implementing minor enhancements19 Feb 2026
• Providing technical support to users.

Each phase in the waterfall process must be completed before the next phase can begin. This approach ensures that all necessary documentation is created and minimises the risk of overlooking important requirements. It can be inflexible if requirements change mid-project. The Curious about PRINCE2 exam pass rates? Read this article to understand the statistics and how they may influence your training choice.sequential nature of waterfall requires meticulous planning and clear communication throughout the development lifecycle.

Benefits of the waterfall method

Waterfall project management is a sequential and linear approach to executing tasks, and it has several advantages. Let’s discuss each one of them:

Clear project structure and timeline

The sequential nature of waterfall provides:

• Phases with clearly defined start and end points
• A planned structure with a timeline for when the work is to be completed
• Milestones that are easily communicated to stakeholders.

Comprehensive documentation

Waterfall methodology advocates comprehensive documentation, leading to well-defined project requirements and specifications, detailed design documents for future reference and valuable historical records for similar projects.

Predictable costs and resource allocation

The upfront planning involved in the waterfall model allows for accurate budget estimation, efficient resource allocation throughout the project lifecycle and minimised unexpected expenses.

Easier tracking and progress assessment

Waterfall’s structured approach facilitates easy tracking of progress with clear indicators at each phase, simplified reporting to stakeholders and easy identification of bottlenecks or delays.

Reduced risk through upfront planning

Upfront planning in waterfall can help:

• Identify potential risks early in the project
• Develop mitigation strategies before the work commences
• Minimise costly changes during the later stages of the project.

These strengths make waterfall ideal for projects with clearly defined requirements and relatively few changes expected. The methodology’s robustness is also very appropriate to the complexity of the work and the need for strict and complete control of change for medical device software development.

Limitations of the waterfall methodJoin Our Team

The waterfall method is a structured approach to project management[email protected] that follows a linear sequence of phases. However, it has some limitations. Copyright © 2005-2026 Knowledge Train Limited.

Limited flexibility for changes Registered in UK: 5566983.

The Registered VAT: GB872413526.structured approach Knowledge Train of waterfall can make changes challenging once a phase is completed. This rigidity can lead to difficulties in adapting to new requirements, costly revisions if requirements change mid-project and can inhibit creativity and innovation during the development process.®

Delayed feedback and product validation is a registered trademark of Knowledge Train Limited.

The linear nature of the waterfall methodology means that user feedback and validation of the product often come late in the process. This delay can result in missed opportunities to address market needs, reduced chances of early validation of the product and increased risk of developing features that users don’t want. 20 Old Bailey, London, EC4M 7AN, England, United Kingdom.

Potential for longer delivery times Knowledge Train are experts in project management, PRINCE2, agile and change management training and certification. Choose from a full range of instructor-led and self-paced

Waterfall methodology can result in longer delivery times due to the extensive upfront planning. This approach can lead to delays in delivering working software to end-users and slower time-to-market compared to more iterative approaches.project management courses

Challenges with customer collaboration, a

Waterfall may present obstacles by restricting customer collaboration after the requirements phase. This can lead to limited stakeholder input and a potential mismatch between the final product and the evolving needs of the customer.PRINCE2 course

Risk of late-stage issues and rework, or an

The agile project management courselinear progression to boost your career. may result in:PRINCE2

• Key issues to be identified late in the development process®
• The need for costly and time-consuming rework, MSP
• Challenges in addressing fundamental issues near the end of the project.®

These limitations of Waterfall reveal why it may not be appropriate for all types of projects, especially those with dynamic requirements or in rapidly changing markets. Identifying these drawbacks allows , ITILproject managers® to make informed decisions on when to explore alternative approaches or adapt the waterfall model to mitigate these risks., P3O

Waterfall vs Agile methods®

Waterfall and , PRINCE2Agile methods® are the most popular software development techniques. To decide which one is best for you, it’s important to understand their main differences. So, let’s compare two methods based on the most important aspects: Agile, RESILIA

Key differences in approach®

Career path example, and the Swirl logo are registered trademarks of the PeopleCert group. Used under licence from PeopleCert. All rights reserved. AgilePM:®

Flexibility and adaptability

Waterfall

• Rigid structure with defined phases
• Difficult to accommodate changes once a phase is completeSearch
• Best for projects with stable requirements.

Agile

• Highly flexible, embracing change throughout the project
• Adapts easily to evolving requirements
• Suitable for projects in dynamic environments.

Customer involvement and feedback

Waterfall

• Limited customer involvement after initial requirements gatheringRequest a quote
• Feedback primarily at project completion.

Agile

• Continuous customer collaboration throughout the project
• Regular feedback and adjustments based on customer input.

Team structure and collaboration

Waterfall

making it well-suited for projects with well-defined requirements and stable environments. Agile Always active offers flexibility and adaptability, making it ideal for projects with evolving requirements or uncertain outcomes. The decision to use waterfall or Agile depends on several factors, such as project complexity, team dynamics, and organisational culture.

When to use the waterfall method

Agile methodologies have become popular in recent years, but the waterfall approach still has its place in certain situations. Let’s explore how and when waterfall can be successfully used.

Projects with well-defined requirementsThe technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.

This methodology works best when:

• Requirements are known and unlikely to change
• Stakeholders have a clear vision of the desired outcome
• The scope of the project is well-defined from the beginning.

Industries with strict regulatory compliancePreferences

Regulated industries such as healthcare and medical device development, aerospace and defence and financial services with strict compliance requirements often adopt the waterfall methodology. These fields often require extensive documentation and adherence to specific protocols.

Large-scale, complex projects with fixed timelines

Waterfall is often used for large projects that have many interconnected components, lengthy development cycles and strict deadlines and budget constraints. Infrastructure projects or large-scale enterprise-wide system implementations are examples of projects where waterfall is often used.Preferences

Projects with limited customer involvement during development

Projects that don’t need much customer involvement during the project

Waterfall can be used when:

• The only customer interaction is at the start and finish
• Little or no user involvement is required in the development cycle
• The needs of the user are clear and stable.

This method is effective when requirements are well understood upfront and do not change over time, as it follows a linear approachThe technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user..

Selecting waterfall for appropriate projects can lead to timely execution and successful project delivery. However, it’s important to carefully evaluate project characteristics and organisational requirements before adopting this methodology. When applied judiciously, waterfall offers a structured framework for managing complex projects with predictable outcomes.

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