Agile software development
Agile software development is an iterative approach to software development that aims to promote flexibility and continuous improvement.

Principles and methods of agile software development
Agile software development is based on the Agile Manifesto, which was published in 2001 and defines four core values and twelve principles.
The core values include emphasizing individuals and interactions over processes and tools, working software over comprehensive documentation, collaboration with the customer over contract negotiations and responding to change by following a plan.
These values form the basis for various agile methods such as Scrum, Kanban and Extreme Programming (XP).
Scrum is one of the best-known agile methods and focuses on iterative development through short, fixed periods of time, known as sprints.
A typical Scrum process includes roles such as the Product Owner, Scrum Master and the development team.
The product owner is responsible for backlog management, while the scrum master ensures that the team adheres to the scrum principles and removes obstacles.
Kanban, on the other hand, emphasizes the visual management of tasks through a Kanban board that shows the progress of tasks through different phases.
XP places particular emphasis on technical practices such as Test-Driven Development (TDD), Continuous Integration and Pair Programming to improve software quality and minimize risks.

Advantages and challenges of agile software development
Agile software development offers numerous advantages, including increased flexibility, better adaptability to change and greater customer involvement.
Through iterative development and regular feedback loops, teams can react quickly to new requirements and make continuous improvements.
This often leads to greater customer satisfaction, as the solutions developed are better tailored to the actual needs of users.
In addition, the agile approach promotes closer collaboration within the team and with stakeholders, which contributes to greater team integration and a better understanding of the project goals.
Despite the many advantages, agile software development also brings challenges.
One of the biggest challenges is the need for a cultural change within the organization in order to fully adopt agile principles.
This often requires training and continuous adaptation of the way of working.
In addition, the lack of fixed planning can lead to uncertainties, especially in projects with fixed budgets and timeframes.
Agile methods also require a high degree of discipline and self-organization from the team, which is not always easy to achieve.
Finally, close collaboration with the customer can lead to tensions if expectations and reality do not match.
Overall, Agile software development provides an effective framework for modern software development, but it requires careful implementation and continuous adaptation to achieve the best results.