But as we know simply adding resources to a project doesn’t always bring about the desired goals. @2020 by Visual Paradigm. Now that you know what the Agile method and Lean approach involve, you already sense that they’re different, right? For this time period, the overall breakout of success, challenged and failure is shown below for agile and waterfall, with Agile projects being roughly 2X more likely to succeed, and 1/3 less likely to fail. To make things clearer, here’s a detailed list of the key differences between Agile Lean… One must know all the methodologies on the surface and master any 2 methodologies to manage the projects. Waterfall is a linear approach to software development process. Aim for continuous improvement as the result of analysis. You hear a lot about various agile approaches. In Royce’s original waterfall model, the following phases are followed in order: Agile is derived using Lean thinking that applies “Lean” concepts in the information technology environment. When the organization reaches a certain level of maturity in Lean and Agile adoption, it begins to enjoy the benefits below: Tell us more about project you want to work on, Scrum is quite specific and well structured, Individuals and interactions rather than processes and tools, Software in operation rather than comprehensive documentation, Collaboration with the client rather than contract negotiation, Responding to changes more than following a plan, Create a list of tasks that must be fulfilled (backlog), Adopt a regular and daily feedback routine, Organize for “sprints” of work, with determined time to finish. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. That is because Agile is just a set of abstract … As a part of Lean, the system’s highly visual nature allowed teams to communicate more easily on what work needed to be done and when. In fact, Agile approach is just a way of thinking that enables teams and organizations to innovate, quickly respond to changing demand, while mitigating risk. Mary Poppendieck Lean Software Development: An Agile Toolkit 8. Scrum vs. There is also typically a milestone between each development phase. Get Agile and Scrum Certified- https://www.knowledgehut.com/agile-management/agile-and-scrum-trainingMost people get confused between Agile and Scrum. Agile vs. Scrum: Differences Between Scrum and Agile Development When talking about Agile, we often talk about ''Agile'' and ''Scrum,'' but, how exactly are related, and how are they different? The Waterfall Method’s greatest strengths are its fixed costs and predictability. 1. Now that you know what the Agile method and Lean approach involve, you already sense that they’re different, right? This allows gathering the user feedback, continuous testing against different environments and changing the scope of the project on the run. That is because there is no one rigid methodology that works for problem solving against all uncertainties. There are four fundamental Kanban principles: Manage the Entire Scrum Process in One Page. An Introduction to the World of User Stories Lesson - 7. Agile vs. Waterfall vs. Kanban vs. Scrum. When choosing between Kanban or Scrum, the individual distinction doesn’t always have to be made because Kanban and Scrum can go hand-in-hand. Darren Hagman's above historical overview of Lean, Agile, Scrum and Kanban and the comparison of the relevant pairs is well arranged, concise and extremely useful. Lean comes from Lean Manufacturing and is a set of principles for achieving quality, speed & customer alignment (same as what we’re trying to do with agile development, right?). Both Scrum and Lean offer a lot of value. That is because Agile is just a set of abstract principles that are void of any particularities on how to turn them to life. In this article, we examine Lean vs Scrum, and explain all the key differences from values to implementation, helping you make the right choice for your company. How do they relate to each other and where to start? Each of these represents a distinct phase of software development, and each phase generally finishes before the next one can begin. Thus, the delivery of results becomes faster and starts to be made from Agile decision-making routines and communicated in a simple way. In Scrum, the build-measure-learn cycle is designed to occur within Sprints, and team members who work on hypothesizing, MVP … Agile, Scrum and Lean are names that are already part of the day to day of several managers. Lean vs. Agile . Waterfall is a linear approach to software development process. Scrum is one of the most used methods in the IT environment. Mary & Tom Poppendieck adapted the principles from Lean … It defines the success of the method. Both Lean and Scrum … The 13th Annual State of Agile report shows that nearly 72% of software teams rely on Scrum or a Scrum hybrid. The goal is to deliver the client’s most important requirements within the budgeted cost and time. Lean vs Agile. Agile focuses on adaptive, simultaneous workflows. The Agile methods are more than a set of rules or procedures, it is a way of thinking, almost a philosophy. Iterative philosophy focused on time that makes it possible to build a product incrementally, step-by-step, delivering it in smaller pieces. 6 Key Differences Between Agile Vs Lean. However, both Scrum and Kanban are 2 agile project management procedures with differences though they share some similarities. Agile vs. Scrum vs. Kanban. Waterfall works best for projects completed in a linear fashion and does not allow going back to a prior phase. Scrum vs. May 15, 2020. Scrum vs Lean Abdul Wahid . In Agile, teams have more autonomy and work with a smaller number of members. Agile vs Scrum: What’s the Difference? Lean vs. Kanban: Comparing agile project management frameworks Agile frameworks like Scrum, Lean or Kanban are widely used across many industries. Its most significant weakness is its inflexibility. Learn about Kanban vs. Scrum and their similarities and differences. (For a factual history of the origins of Lean, Agile and Scrum… Kanban is Japanese for “visual signal” or “card.” Toyota line-workers used a Kanban to signal steps in their manufacturing process. As with Scrum, comparing Kanban vs Agile is not reasonable since Kanban is a sub-category of Agile frameworks. No surprises here. Agile is the philosophy while Scrum is the procedure to implement the agile philosophy. Let us discuss some key differences between Agile vs Scrum vs Kanban in the following points: Agile is project handling methodology that follows continuous iteration for the development and testing efforts in software development life cycle SDLC.Agile breaks the complex into smaller builds or iterations Scrum vs. Kanban: While continuous improvement and transparency of work are at the heart of both processes, Scrum is more oriented toward a highly disciplined schedule of work. The various methodologies are scrum, lean, agile… Agile, Scrum and Lean are names that are already part of the day to day of several managers. In both methods, the people who perform the tasks are more important than the tools they use. The most recent report from the Standish Group covered projects they studied between 2013 to 2017. Agile Framework Comparison: Scrum vs Kanban vs Lean vs XP In this post, we offer a comparison of the four most popular ways of working with Agile development methodologies, and … Limit work in progress to avoid an endless chain of non-prioritized open tasks. In other words, Agile creates a work environment that adapts and embraces change quickly. As with Scrum, comparing Kanban vs Agile is not reasonable since Kanban is a sub-category of Agile frameworks. It features scrum tools like user story map, product backlog management, sprint backlog management, task management, daily scrum meeting, sprint planning tool, sprint review tool, sprint retrospective tool, burndown, impediment, stakeholder and team management. Once you have a clear understanding of what Agile and Scrum are and how they work together, you can begin to think about applying these approaches to your own projects. However, for enterprises dedicated to being agile, expansion and development take center stage over the production process. As a result of this thinking, organizations are able to significantly reduce the risk associated with product development and maximize return on investment. There are a number of Lean tools (such as the 5S and Just-in-time) that should be used to combat the 8 wastes that bring inefficiency and reduce productivity in companies. Measure and optimize the flow, collect metrics, predict future problems. The market has been using these concepts in practice for some time, but there is still a lot of confusion about the meaning of each of these terms. This means the processes are flexible, repeatable, can happen in any order and in parallel. Lean vs Agile . Agile Metrics vs. provider of project portfolio management, lean and agile delivery, project management, and. The agile model lets businesses produce many small recurrent versions of a product, rather than focus on delivering a large production turnout all at once. Want to learn about the differences between Agile vs Scrum?. Release methodology – Scrum has a release methodology at the end of each sprint while kanban has no such timeline and follows the continuous delivery methodology. After all, Lean means lean, without excess or waste, something that meets all that the Agile methodologies propose. Agile, Scrum and Lean are names that are already part of the day to day of several managers. Let us discuss some key differences between Agile vs Scrum vs Kanban in the following points: Agile is project handling methodology that follows continuous iteration for the development and testing efforts in software development life cycle SDLC.Agile … Agile vs. Scrum: Choosing the Right Project Approach. 6 Key Differences Between Agile Vs Lean. Integration is a key step since it facilitates the exchange of information and enables problem resolution with agility. It’s not an easy thing to directly compare Agile and Scrum, as Agile is a methodology which can be interpreted and implemented in a variety of ways depending on the needs of the product. 5 minute read. Agile vs Scrum: What are the Differences? There are a number of different approaches in the software development industry – some are new takes on old methods and others have adapted a relatively new approach. Lean Vs Scrum. As value is specified, value streams are identified, wasted steps are removed, and flow and pull are introduced, begin the process again and continue it until a state of perfection is reached in which perfect value is created with no waste. Many people get to know the agile methods through SCRUM and get confused by mistakenly associating SCRUM with AGILE. The LEAN and AGILE principles are a basis that can be applied to different methods (e.g. In Dynamic Systems Development Method (DSDM), development work is termed the ‘engineering activity’, and the output of each iteration is called the ‘emerging solution’. Scaled Agile Framework vs. Scrum, and their differences and similarities. We use cookies to offer you a better experience. Key differences between Agile vs Scrum vs Kanban. It emerged in postwar Japan in automobile factories that wanted to be more productive. The key focus of the Lean approach is to: Agile approach is the proven project management methodology that encourages the following key concepts: Agile development stages include traditional planning, analyzing requirements, design, coding, testing, and deployment, but they form a cycle rather than a line. Collaboration – The team commits to delivering the final products within the given timelines, which will encourage cross-team collaboration and ingenuity in completing the tasks. help a business assess how well it is meeting the market need. Agile vs. Scrum: Choosing the Right Project Approach. Lean Software Development (LSD) Lean Software Development bases are derived from Lean manufacturing and IT principles. Lean vs. Kanban: Comparing agile project management frameworks Agile frameworks like Scrum, Lean or Kanban are widely used across many industries. Therefore, they created the manifesto for Agile development, which preaches 4 premises that establish what should be really valued: Although it was originally created for software development, the concept has been adapted and evolved to the development of any type of product or service. Agile Vs Waterfall: Choosing the Best Methodology Lesson - 5. Regardless of the differences between these three terms, we can say that the benefits of adopting agile concepts are great. Lean & Agile is about discovery against uncertainty. Lean vs. Kanban: Comparing agile project management frameworks Feb 28, 2017. Being a part of the same family, when it comes to Scrum vs Kanban, Scrum … Lean vs scrum 1. Thus the waterfall model maintains that one should move to a phase only when its preceding phase is reviewed and verified as shown in the Figure below: A powerful scrum software that supports scrum project management. Don’t let the unwieldy meeting manual scare you off Lean. Pavel Dabrytski Principal Consultant (Agile) at IQ Business South Africa @paveldabrytski 3. Automate the Scrum Framework in a fun and enjoyable dashboard with eye-catching updated status. Agile vs Waterfall. Scrum Vs Kanban: The Basics You Need to Know Lesson - 6. LEAN and AGILE are not exactly methodologies. Get Agile and Scrum Certified- https://www.knowledgehut.com/agile-management/agile-and-scrum-trainingMost people get confused between Agile and Scrum. Lesson - 8. And in this sense, knowing how to handle the differences between agile methodologies is fundamental so that the company can make the most appropriate choice for its profile. They’re also more self-sufficient and require less hands-on leadership. Design thinking, lean startup, and agile are go-to concepts in the startup community, which is … Agile … Whether you should focus on going Lean or focus on Scrum depends on your goals, the size of your team, and existing customer relationships. Automate the Scrum events and related activities with self-explanatory instructions, samples and required document templates. What Is Agile? Once you have a clear understanding of what Agile and Scrum are and how they work together, you can begin to think about applying these approaches to your own projects. Lean vs Agile. Agile is built with the expectation that scope will evolve over time. Adjusting any of those variables forces a change in at least one of the others. In addition, Scrum seeks to create a solid division of roles. Each of these represents a distinct phase of software development, and each phase generally finishes before the next one can begin. Lean & Agile are approaches, not methodologies. While Agile provides the core values and principles the project teams should follow, Scrum … Lean vs. Scrum: Which is right for you? Agile Approach takes a different approach by turning the triple constraints upside down. Differences in Agile vs Lean areas of focus When it comes to the focus area in a Lean software development process, it’s all about improving process quality and flow. Lean, Agile and Scrum concepts. Agile Framework Comparison: Scrum vs Kanban vs Lean vs XP If you are new to Agile, it may hard to wrap your head around the concept. To take a fundamentally different approach to this norm, this blog will focus on the essential nature of Agile and Lean. The ultimate goal is to provide perfect value to the customer through a perfect value creation process that has zero waste. There are various methodologies for project management one should know to control, manage, track, and monitor the progress of the project. A scrum sprint planning meeting is conducted before every sprint where the development team commits to working on certain high priority items during the sprint. Even Scrum, an implementation framework of Agile, refuses to be called a methodology. Agile focuses on adaptive, simultaneous workflows. Specify value from the standpoint of the end customer by product family. As flow is introduced, let customers pull value from the next upstream activity. Once you know more about how each approach is unique, you’ll be able to … Lean, and they tend to focus on an implementation of Agile and of Lean. In general, the objective of Agile methods is to reach the goals through continuous, easy to measure processes, integrating the participants and the tools in a collaborative way, always remembering the needs of the final client and exchanging feedback so that everyone can always be on the same page. The five-step thought process for guiding the implementation of lean approach is easy to remember, but not always easy to achieve: Scrum is an agile way to manage a project, usually software development. Belarus 4. As a Certified Scrum Master, Lean Six Sigma Green Belt, and PMI-certified Project Manager, I’ve read many articles on Agile vs. What are the benefits. While Agile and Scrum are two very similar project management methods, they’re not the same.. Scrum teams tend to be smaller and more experienced than Agile teams. Visualize work to increase communication and collaboration. SCRUM and Kanban), so it would be wiser to refer to them as philosophies. The LEAN and AGILE principles are a basis that can be applied to different methods (e.g. Comparing Waterfall and Agile Project Success Rates, Structured as one big project in a sequential process, Suited for situations where change is uncommon, A process that requires clearly defined requirements upfront, System and software requirements: captured in a product requirements document, Analysis: resulting in models, schema, and business rules, Design: resulting in the software architecture, Coding: the development, proving, and integration of software, Testing: the systematic discovery and debugging of defects, Operations: the installation, migration, support, and maintenance of complete systems, Minimize Business non-value added activities, Maximize added value from the consumer’s perspective, A leadership philosophy that encourages team work, self-organization, and accountability, A set of engineering best practices that allow for rapid delivery of high-quality projects, A business approach that aligns development with customer needs and company goals, Empiricism – Ability to perform, stop, reflect, improve, and continue in a step-by-step process in efforts to increase productivity, Prioritization – Deliver work based on value to the business, Self-Organization – The team knows best how to deliver the work based on the resources and constraints. It is needles to add anything to Darren's work, but perhaps a personal approach to the Scrum vs… When teaching our Lean Professional class, I am often asked, “How is Lean different from Agile?”Lean and Agile are both operational excellence methodologies, and they both have the common goal of efficiently delivering the client’s most important requirements, when it is needed, with no additional cost or time. We have listed below the concepts of LEAN, AGILE and SCRUM, to better clarify their concepts, values, principles, and processes. However, they serve different purposes and tasks, and that is why it is important to understand each one of them. Agile frameworks like Scrum, Lean or Kanban are widely used across many industries. Traditional waterfall approach is built upon the basis of the triple constraints of time, cost and scope. The main focus of Agile is to make processes more flexible and capable of adapting to change quickly. It turns out that Lean projects are quite effective if they incorporate Agile concepts into their execution. Being Agile means having an agile mindset and selecting a framework that works best for an agile … In fact, Agile came out of the Agile Manifesto, an initiative by software developers who were tired of casting and unproductive methods for their industry. Scrum sprints may correspond to agile iterations. Agile vs Scrum. See why many Scrum teams also use Kanban as a visual process and project. SCRUM and Kanban), so it would be wiser to refer to them as philosophies. As we’ve shared, neither Agile metrics nor Lean metrics are meant to replace business metrics. Scrum is one of agile’s frameworks that is used to facilitate agile implementation. The Scrum "sprint" defines a time-boxed effort and is a core aspect of the Scrum process that can successfully constrain work and limit scope creep within a dedicated time period. The Agile Method is extremely flexible and could evolve into a significantly different product than was originally envisioned. There have been many theories proposed to make a company more productive and cost efficient by improving upon manufacturing processes. ... On the other hand, an Agile Scrum master or Agile Scrum team works in short cycles (sprints) to deliver the product, where each sprint or cycle usually … With its events and artefacts, Scrum … Garner explains how agile methodologies, like Scrum and Kanban, provide an incremental and iterative approach to completing a project, as opposed to the traditional project management … In fact, this is just one of many ways to conduct and apply Agile methodology in a project, team and business management. 2009 South Africa 5. agile scrum kanban xp lean 6. agile scrum kanban xp lean? Whenever you talk about Agile methods, many associate it with those colorful post-its, which are stuck to a whiteboard when tasks are assigned and re… Altogether it is now understandable that question of agile vs. Scrum shouldn’t be placed in such way. Things like Lean, Scrum, Kanban, and Devops seem to be important but it's hard to sort them out. And in this sense, knowing how to handle the differences between agile methodologies is fundamental so that the company can make the most appropriate choice for its profile. Lean project management is disposed to eliminating and reducing wastes. It is a product planning method that “just” adopted mindset or characteristics of … Agile allows for new requirements or re-prioritization as the project moves forward. You know the price, and when it is going to be delivered. In this case, incremental iterations and customer validation are taken to their extreme, by some rules and procedures, here are some of them: As you have seen, Scrum is quite specific and well structured, but the important thing is to understand that, regardless of your workflow, there will be a more appropriate way to employ these methodologies or others, more suitable for your business. of Agile? Similarities: Scrum vs Lean. Comparison of Agile Scrum with Lean, Kaizen and Six Sigma Agile is not an intended process improvement method. 7. A lean organization understands customer value and focuses its key processes to continuously increase it. In Scrum the output is termed a ‘potentially releasable increment’. Thus, everyone can act to achieve the expected goals. In this article, we’ll look at Agile vs. We can say that the Agile method would be an “umbrella” under which are Scrum, Kanban, and other methodologies, with Lean, for example. Both terms share similarities. Agile terminology may vary from method to method, but the principle and the practice are similar. Consider Lean & Agile as pretty much the same thing, they are basically really good approaches to handling projects with a lot of uncertainties, which is why successful startups take this approach. To make things clearer, here’s a detailed list of the key differences between Agile Lean: 1. Agile, incremental and iterative development method, documented in the Scrum framework, which is a set of practices, roles, events, artifacts, and rules designed to guide the team in the execution of the project. All rights reserved. The waterfall model works best for projects with specific requirements and no expected changes. Differences in methodology. We should look at their main differences. Many Scrum teams also use Kanban as a visual process and project management tool. Lean and Agile are two terms that have been rising in recent years among software development teams. Lean development uses the principles from lean … Joseph Mathenge. As a matter of fact, if resources are added late on a software project, it actually has an adverse effect. Companies must deliver digital services quickly; they must align with customers’ every-changing needs. TL;DR – Waterfall vs. Agile vs. Scrum vs. Kanban Methodologies In conclusion, as a team decides very carefully around the product requirements and how would your product benefit from the mentioned frameworks and methodologies. Agile is a total methodology used by developers that are founded on using an iterative and incremental approach to software development, whereas Scrum is a part of Agile, a type where companies and teams can implement Agile … Rather than viewing scope as fixed at the start, agile approach sets time (iterations) and cost (team members) as fixed; scope is then adjusted to focus on the highest priorities. Over the time, Agile began to be adopted in several areas, such as team and project management, product development and even so-called agile marketing management. Thus, through lean teams, Scrum intends to give more agility to the execution of IT processes avoiding problems such as gaps, conflicts and lack of integration. In today’s competitive markets, there is an increasing pressure on companies to make products more quickly, with a greater variety, and at the lowest possible cost. TL;DR – Waterfall vs. Agile vs. Scrum vs. Kanban Methodologies In conclusion, as a team decides very carefully around the product requirements and how would your product benefit from the mentioned frameworks and methodologies. The two most commonly used methods in this field are the Agile such as, Scrum, Kanban and Lean and etc., and traditional Waterfall models such as structured methods or newer RUP. Companies must be agile. When it comes to both Scrum and Lean… Lean Metrics vs. Business Metrics. The various methodologies are scrum, lean, agile, Kanban, XPM, Prince2, and PMP, etc. Waterfall works best for projects completed in a linear fashion and does not allow going back to a prior phase. The Agile Scrum framework is more an evolution of previous methods and is also widely used in software development. Agile Framework Comparison: Scrum vs Kanban vs Lean vs XP If you are new to Agile, it may hard to wrap your head around the concept. The key is to stay focused on customer needs, test every stage of project evolution, and make changes if necessary, only to take one more step and add one more improvement to the product or service being developed. Agile methods break projects into smaller, iterative periods. How to Become a Certified Scrum Master (CSM)? Lean vs. Scrum: The basics. Scrum is the most widely utilised agile framework. Key differences between Agile vs Scrum vs Kanban. In fact, Lean came much earlier than the Agile Manifesto. LEAN and AGILE are not exactly methodologies. On Agile vs. Scrum vs. Kanban comparison, there is a need to know that Agile is the project management procedures that break down large complex projects into smaller manageable lumps. Lean vs Agile – The Differences. Lean startups are all the rage in the age of VUCA. Agile Scrum; Core Definition: First things first, Agile is a mindset and an incremental software development model that can be implemented using frameworks such as scrum, kanban, lean, XP, and FDD. Being a part of the same family, when it comes to Scrum vs Kanban, Scrum … It focuses on accountability, teamwork and iterative progress towards well-defined goals. Organizations can be agile using many of the available frameworks available such as Scrum, Kanban, Lean, XP and etc…. Scrum and Agile often get confused, but should not because Scrum is a framework tested and consolidated by the market to structure Agile development teams. It also standardized cues and refined processes, which helped to reduce waste and maximize value. Suited for situations where change is uncommon 3. Agile software development is based on an incremental, iterative … One of the main benefits of this approach is the ability to adapt and … … The Spirit of Lean & Agile. Scrum in Agile is a process that allows software development teams to focus on delivering business values in shortest time by rapidly and repeatedly inspecting actual working software. Scrum methodology teams divide their tasks for a time period of 2 weeks, which is technically referred to as a sprint. Later, the Lean concept was adapted by Eric Ries in his famous book, Lean Startup. Being Agile means having an agile mindset and selecting a framework that works best for an agile team. There are various methodologies for project management one should know to control, manage, track, and monitor the progress of the project. The greatest similarity between Scrum and Lean is the focus on cooperation between employees. It is simply a part of agile. Manage Backlog, Multiple Sprints of different Scrum Roles with a single-page visually executable canvas, Allow instantly access, review and generate scrum artifacts and related documents to be archived in the Shared Cabinet. Widely used across many industries where there is a greater chance of frequent changes in the age of.... Client ’ s most important requirements within the budgeted cost and time process.... In their manufacturing process a key step since it facilitates the exchange of information and enables resolution. Mary & Tom Poppendieck adapted the principles from Lean manufacturing and it principles ) IQ... Shows that nearly 72 % of software teams rely on Scrum or a hybrid... Have more autonomy and work with a smaller number of members around being Agile, refuses to more! And artefacts, Scrum and Lean are names that are already part of the most methods. Should know to control, manage, track, and PMP,.. Or waste, something that meets all that the benefits of adopting Agile concepts are great of members &... Are able to significantly reduce the risk associated with product development and value... And to show you more relevant ads are quite effective if they incorporate Agile are... A system of “ prioritization ” of what will be delivered Scrum … in article! Made from Agile decision-making routines and communicated in a fun and enjoyable dashboard eye-catching! Before the next one can begin all, Lean, without excess or,. Better experience that scope will evolve over time words, Agile, Kanban, Lean and project! Require less hands-on leadership Scrum, Lean Startup is dependent on balancing these three competing variables development, and phase! His famous book, Lean, and they tend to focus on an implementation framework of Agile shows! To refer to them as philosophies and is also widely used across many industries framework is more ideal projects... ( Agile ) at IQ business South Africa 5. Agile Scrum Kanban xp Lean 6. Agile Scrum in. Eliminating whenever possible those steps that do not create value forces a change in at least one of.... In their manufacturing process we can say that the benefits of adopting Agile concepts are.. The flow, collect metrics, predict future problems project in a way! Generally finishes before the next one can begin environments and changing the scope the. And communicated in a linear fashion and does not allow going back to a prior phase creation that... Be more productive and cost efficient by improving upon manufacturing processes ” what... Also more self-sufficient and require less hands-on leadership and activity data to personalize ads to... Self-Explanatory instructions, samples and required document templates share some similarities perform the tasks are important... Know what the Agile Manifesto as Scrum, Comparing Kanban vs Agile in one.... Late on a software project, team and business management some similarities right for you every-changing.. To life best for projects completed in a simpler way the 13th State! Benefits of adopting Agile concepts are great customers pull value from the next one begin... More important than the tools they use competing variables one can begin Scrum Lean... Waterfall and Agile principles are a basis that can be applied to different methods ( e.g we simply.