- Our highest priority is to satisfy the customer through early and continuous delivery of valuable software.
- Welcome changing requirements, even late in development. Agile processes harness change for the customer's competitive advantage.
- Deliver working software frequently, from a couple of weeks to a couple of months, with a preference to the shorter timescale.
- Business people and developers must work together daily throughout the project.
- Working software is the primary measure of progress.
According to the Standish Group's “2015 Chaos Report,” a study of 10,000 software projects, small agile projects are 30 percent more likely to succeed than traditional projects. Medium-sized projects are four times (400 percent) more likely to succeed with an agile approach than a traditional approach, and large, complex projects are six times (600 percent) more likely to succeed with an agile approach.
![2015 Chaos Report](https://cdn.prod.website-files.com/6634a8f8dd9b2a63c9e6be83/66a0c91d5cb0b628ebc36418_agile-project-management-2e-2015-chaos-report.jpeg)
This table shows some of the differences between risk on traditional projects and on agile projects.
Risk Management with Traditional Approaches | Risk Dynamics with Agile Approaches |
Large numbers of projects fail or are challenged. | Risk of catastrophic failure — spending large amounts of money with nothing to show — is almost eliminated. |
The bigger, longer, and more complex the project, the more risky it is. Risk is highest at the end of a project. | Product value is gained immediately, rather than sinking costs into a project for months or even years with the growing chance of failure. |
Conducting all the testing at the end of a project means that finding serious problems can put the entire project at risk. | Testing occurs while you develop. If a technical approach, a requirement, or even an entire product is not feasible, the development team discovers this in a short time, and you have more time to course correct. If correction is not possible, stakeholders spend less money on a failed project. |
Projects are unable to accommodate new requirements mid-project without increased time and cost because extensive sunk cost exists in even the lowest-priority requirements. | Change for the benefit of the product is welcomed. Agile projects accommodate new high-priority requirements without increasing time or cost by removing a low-priority requirement of equal time and cost. |
Traditional projects require time and cost estimates at the project start, when teams know the least about the project. Estimates are often inaccurate, creating a gap between expected and actual project schedules and budgets. | Project time and cost is estimated using the scrum team's actual performance, or velocity. You refine estimates throughout the project, because the longer you work on a project, the more you learn about the project, the requirements, and the scrum team. |
When stakeholders don't have a unified goal, they can end up confusing the project team with conflicting information about what the product should achieve. | A single product owner is responsible for creating a vision for the product and represents the stakeholders to the project team. |
Unresponsive or absent stakeholders can cause project delays and result in products that do not achieve the right goals. | The product owner is responsible for providing information about the product immediately. In addition, the scrum master helps remove impediments on a daily basis. |
![declining risk model Agile project](https://cdn.prod.website-files.com/6634a8f8dd9b2a63c9e6be83/66a0c91d5cb0b628ebc3641c_agile-proejct-management-2e-declining-risk-model.jpeg)
All projects have some risk, regardless of your project approach. However, with agile project management, the days of catastrophic project failure — spending large amounts of time and money with no return on investment (ROI) — are over. The elimination of large-scale failure is the biggest difference between risk on traditional projects and on agile projects.