What is the Agile concept based on?

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The creation of the Agile Manifesto in 2001 was a landmark event for the IT industry, having a significant impact on software development methods. However, the Agile Manifesto itself was influenced by various methodologies, each of which contributed to the formation of the core principles and values ​​of agile development. Thus, Agile is the result of combining best practices from many sources. Let's look at each of these methodologies:

Spiral Model
The Spiral Development Model, introduced by Barry Boehm in 1986, is a project management method that involves multiple stages that repeat in a cycle. Each cycle involves defining goals, assessing risks, developing, and testing. This method helps manage risks and adapt to changes as the work progresses.

Extreme Programming (XP)
Extreme programming was new zealand email list developed by Kent Beck, Ward Cunningham, and Ron Jeffrey in the late 1990s. This approach focuses on rapid product development. In XP, a project is broken down into several small releases, allowing customers to track progress and provide immediate feedback.

This methodology brought the Agile Manifesto's ideas of short iterations, continuous integration and testing, and emphasized the importance of communication and teamwork during the development process.

Specification and development of formal systems (Formal Methods)
These are mathematical methods of checking and describing software that have been researched and developed over many years. These methods help prove the correctness of the code.

Formal Methods have rarely been used in industrial development, but they have played an important role in understanding the importance of careful code review and testing. The application of this approach requires special skills.

Scrum
The methodology was developed by Ken Schwaber and Jeff Sutherland in the early 1990s. The main goal was to help development teams cope more effectively with changing customer requirements and improve the project management process.

In Scrum, the roles of participants and their areas of responsibility are initially defined. The development process is divided into short, fixed-time segments (sprints), during which the team works on creating a working version of the product, adding new features.

Scrum

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The Scrum method has demonstrated that rapid development and an iterative approach can effectively adapt to change.