Principles of agile development:

Individuals and interactions over processes and tools: Face-to-face communication and effective collaboration between team members are valued more than relying solely on tools and processes.

Working software based on extensive documentation: Although documentation is important, the emphasis is on having software that works and meets requirements.

Collaboration with the client in contractual negotiation: Continuous collaboration with the client is sought to understand and adapt to their needs instead of depending on rigid contracts.

Respond to changes rather than following a plan: Flexibility and responsiveness are crucial. The ability to adapt to changes in customer requirements is valued, even in advanced stages of development.

Agile development practices:

Iterations and Incremental Releases: Work is performed in short cycles called iterations, with incremental releases of working software after each iteration.

Scrum and Kanban: Specific methodologies within agile development that provide specific structures and roles to organize work.

Test-Driven Development (TDD): Tests are written before code is developed, ensuring that the code meets specified requirements.

Constant collaboration: Open and continuous communication between team members and stakeholders is essential to address changes and maintain focus on client objectives.

Daily Standups – Short daily standups where the team shares updates and discusses any obstacles.

Retrospectives: At the end of each iteration, the team reflects on what worked well, what didn't work, and how they can improve in the next cycle.

The underlying philosophy of agile development is to adapt to change and focus on delivering value to the customer quickly and efficiently. These practices and principles may vary depending on the specific implementation in a project, but together they seek to improve software quality and customer satisfaction.

Manifiesto para el desarrollo de software ágil (agilemanifesto.org.)

https://martinfowler.com/

https://www.scrumalliance.org/