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  • Writer's pictureNavid Karimian Pour

The Comprehensive Guide to Product Development: Lifecycle, Processes, and Methodologies

Updated: Aug 3, 2023

Product management is a multifaceted discipline that requires a deep understanding of various processes and methodologies. In this post, we'll explore the product life cycle, delve deeper into the product development process, and examine some of the most popular methodologies used today, including Lean, Agile, Scrum, Kanban, Waterfall, Extreme Programming (XP), Feature Driven Development (FDD), and Dynamic Systems Development Method (DSDM).

Understanding the Product Life Cycle

The product life cycle is a concept that describes the stages a product goes through from when it was first thought of until it is removed from the market. There are four stages in the product life cycle:

  1. Introduction: This is when the product is launched after development and testing. It's often characterized by slow sales growth as the market is just beginning to learn about the product. During this stage, significant marketing resources are typically allocated to make consumers aware of the new product.

  2. Growth: If the product is successful, it enters the growth stage, where sales start increasing rapidly. This is when companies often invest heavily in advertising to increase market share. The product becomes widely recognized, and competition may begin to increase during this stage.

  3. Maturity: Eventually, the product reaches the maturity stage, where sales growth slows down and eventually peaks. This is the most profitable stage for companies, but it's also when competition tends to increase. Companies may need to consider modifying the market, product, or marketing strategy to extend the maturity stage of the product.

  4. Decline: Finally, the product enters the decline stage, where sales start to fall. This could be due to market saturation, newer competitors, or changing consumer preferences. Companies need to decide whether to discontinue the product or try to extend its life through updates or rebranding.

Understanding the product life cycle can help product managers make strategic decisions about pricing, marketing, and product development.

Product Life Cycle Stages

The Product Development Process

The product development process is a journey that every product goes through from concept to market. It's a complex process that involves multiple stages. The goal is to deliver a product that meets the needs of the customer and provides value to the market. Here are the key stages:

  1. Idea Generation: This is the initial stage where new product ideas are generated, often based on market research, customer feedback, and company strategy.

  2. Idea Screening: Not all ideas are worth pursuing. In this stage, ideas are evaluated to determine their potential for success.

  3. Concept Development and Testing: The chosen ideas are developed into product concepts and tested with a small group of potential customers.

  4. Business Analysis: At this stage, the commercial viability of the product is assessed. This involves considering factors like potential sales, profits, and costs.

  5. Market Strategy Development: A market strategy for the product is developed, including identifying the target market, determining product positioning, and creating a marketing mix strategy.

  6. Product Development: The product is developed into its final form, whether that's a physical product, a digital product, or a service.

  7. Market Testing: The product is tested in its final form. Customers use the product, and their reactions are monitored to determine if the product should be improved.

  8. Commercialization: The product is launched, and marketing campaigns begin.

  9. Post-Launch Review and Perfect Pricing: The performance of the product is reviewed after launch, and adjustments are made as necessary. This could include changes to the pricing strategy, distribution channels, or marketing strategy.

Product Development Methodologies and Their Pros and Cons

In the world of product development, several methodologies guide how teams work together to deliver products. These methodologies provide a framework for planning, creating, testing, and delivering a product. Let's explore some of the most popular ones, along with their pros and cons.


Lean product development is a methodology that focuses on eliminating waste in the product development process. It's about delivering value to the customer more quickly by focusing on the key features that meet the customer's needs and eliminating activities that do not contribute to this value. Lean methodology is derived from the Lean Manufacturing movement, which was pioneered by Toyota in the mid-20th century. It emphasizes creating value for the customer, optimizing the flow of products, and striving for perfection through continuous improvement.

Pros: Lean methodology helps teams deliver products faster by eliminating waste and focusing on customer value. It encourages continuous improvement and rapid iteration, which can lead to higher quality products.

Cons: Lean requires a high level of discipline and a strong commitment to continuous improvement. It may not be suitable for projects with fixed requirements or those that require a more structured approach.


Agile is a product development methodology that values adaptability and responsiveness to change. It's a flexible approach that encourages iterative development, where requirements and solutions evolve through the collaborative effort of cross-functional teams. Agile methodologies are based on the Agile Manifesto, which values individuals and interactions over processes and tools, working software over comprehensive documentation, customer collaboration over contract negotiation, and responding to change over following a plan.

Pros: Agile methodology allows for flexibility and adaptability, making it ideal for projects where requirements may change. It promotes customer satisfaction through continuous delivery of valuable software.

Cons: Agile requires a high level of customer involvement and can be less predictable than more traditional methodologies. It also requires teams to be self-organizing and collaborative, which may not always be feasible.


Scrum is a subset of Agile and is a widely used methodology that provides a lightweight process framework for agile development. It structures development in cycles of work called sprints, typically lasting between one and four weeks. These fixed-length iterations allow for multiple rounds of feedback and refinement. Scrum teams consist of defined roles, including a Scrum Master and Product Owner. They follow regular rituals such as daily stand-ups and sprint reviews, and use visual artifacts like Kanban boards and burndown charts to track progress.

Pros: Scrum provides a structured framework for managing iterative work at the project level. It promotes rapid iteration, frequent feedback, transparency, and team collaboration.

Cons: Scrum can be challenging to implement, particularly in organizations accustomed to more traditional project management methods. It also requires a high level of commitment from all team members.


Kanban is a methodology that allows teams to manage and visualize their work as it moves through various stages of the process. It emphasizes identifying potential bottlenecks and continuously improving the workflow to achieve optimal throughput. The ultimate goal of Kanban is to create a smooth, cost-effective flow of work, promoting continuous collaboration and active, ongoing learning.

Pros: Kanban provides a visual representation of the workflow, making it easier for teams to identify bottlenecks and make continuous improvements. It's flexible, easy to implement, and promotes a smooth flow of work.

Cons: While Kanban is excellent for workflow management, it doesn't provide a detailed framework for managing entire projects. Maintaining the Kanban board requires a high level of discipline, and the methodology may not be suitable for projects with tight deadlines or complex dependencies.


The Waterfall model is a more traditional approach to product development. It's a linear, sequential design process where progress flows downwards through several phases like a waterfall. The stages typically progress from requirements, design, implementation, verification, to maintenance. Each stage is fully completed before moving on to the next, and there is no going back to a previous phase. If a mistake is made or a change is needed, the project has to start from the beginning.

Pros: The Waterfall model is simple to understand and easy to manage, as each phase has specific deliverables and a review process. It's ideal for projects with fixed requirements and a clear understanding of the end product.

Cons: Waterfall doesn't handle changes well, as it's difficult to go back and change something in a completed phase. It also requires all requirements to be defined upfront, which may not be feasible for all projects.

Extreme Programming (XP)

Extreme Programming (XP) is an agile methodology that aims to produce higher quality software, and higher quality of life for the development team. XP emphasizes teamwork and includes practices such as continuous feedback, pair programming, and simplicity. The methodology is designed to deliver high-quality software quickly and continuously, which improves productivity and introduces checks and balances to prevent problems from occurring in the project.

Pros: XP improves productivity and delivers high-quality software through its focus on customer satisfaction and strong emphasis on teamwork.

Cons: XP requires a high level of customer and developer involvement, and its practices can be difficult to implement without a complete commitment to the methodology.

Feature Driven Development (FDD)

Feature Driven Development (FDD) is an iterative and incremental software development process that follows a model-driven approach. It focuses on developing features, which are small pieces of client-valued functionality. FDD begins by establishing an overall model shape. Then it builds a features list, and plans by feature. It designs by feature and builds by feature. All these activities are tracked by a progress tracking chart.

Pros: FDD allows for scalability and provides concrete progress reports, making it ideal for large-sized projects.

Cons: FDD may not be suitable for smaller projects and requires a significant amount of planning and documentation.

Dynamic Systems Development Method (DSDM)

DSDM is an Agile method that focuses on the full project lifecycle. It aims to deliver business solutions on time and on budget while adjusting for current user requirements. DSDM is particularly good at being used within a larger framework, and can work with other methodologies such as Scrum, to provide a more comprehensive project delivery framework.

Pros: DSDM is user-focused, flexible, and delivers frequent, tangible results.

Cons: DSDM requires a strong understanding of the business requirements at the beginning of the project, which may not always be possible.

Applying Product Development Methodologies in Real-World Scenarios

Understanding the theory behind product development methodologies is one thing, but seeing how they're applied in real-world scenarios helps to truly grasp their value. Here's how these methodologies can be used in practice:

Lean methodology is often used in startup environments where resources are limited, and the market is highly competitive. For instance, a tech startup developing a new mobile app might use Lean to quickly build a minimum viable product (MVP), gather user feedback, and then iterate on the product based on that feedback, thereby reducing waste and focusing on features that provide real value to users.

Agile is ideal for projects where requirements are expected to change and evolve. For example, a software development company creating a new video game might use Agile. As the game is tested and players provide feedback, the developers can quickly adapt to changes, incorporate new features, and fix issues, ensuring that the final product closely aligns with user expectations.

Scrum is effective for complex projects that benefit from regular check-ins and adjustments. An e-commerce company developing a new website might use Scrum. The team could work in sprints to add new features, regularly reviewing progress and adjusting plans as necessary, ensuring the project stays on track and aligns with the company's goals.

Kanban is useful for processes with a steady flow of work and a need for flexibility. For instance, a content marketing team managing a blog might use Kanban. They can visualize their workflow, from content ideation to writing, editing, and publishing, and easily adjust their work in progress as priorities change.

Waterfall is suitable for projects with clear, unchanging requirements. For example, a construction company building a residential complex might use Waterfall. They can plan out each phase of the project in detail, from design to construction to inspection, and progress from one phase to the next only when all tasks are complete.

Extreme Programming (XP) is beneficial for projects that require high-quality software and frequent changes. A software company developing a complex financial system might use XP. The team can work closely with the customer, use pair programming to ensure high code quality, and adapt quickly to changes in requirements.

Feature Driven Development (FDD) is effective for large projects where tracking progress and managing complexity are important. For example, a software company developing a new operating system might use FDD. They can break down the project into smaller, manageable features, allowing them to track progress and ensure that each feature adds value to the overall system.

Dynamic Systems Development Method (DSDM) is useful for projects that require a comprehensive approach. A government agency implementing a new IT system might use DSDM. They can involve users throughout the project, deliver frequent, tangible results, and ensure the project is aligned with business needs and goals.


Product development is a complex process that requires careful planning, coordination, and execution. The choice of the right product development methodology can significantly influence the success of your project. This choice should be based on various factors such as the complexity of the project, the stability of the requirements, the skills and capabilities of your team, and the culture of your organization.

By understanding the product life cycle and the various product development methodologies, including Lean, Agile, Scrum, Kanban, Waterfall, and others, you can make an informed decision that best fits your project and your team. Remember, the ultimate goal is to deliver a high-quality product that meets the needs of your customers. The right methodology can guide your product from concept to market, ensuring its success and maximizing its value.

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