Agile project management is an iterative approach to delivering a project throughout its life cycle. The approach focuses on delivering maximum value against business priorities within the time and budget allowed. It is heavily used in the development of digital solutions since they can be more easily divided into work segments than can physical products. Agile project life cycles are composed of incremental steps towards completion. This iterative approach allows you to adjust as you implement and learn, rather than following a linear path that is decided in advance. 

There are twelve management principles of agile:

1. Satisfy customers through early and continuous delivery.

2. Simplicity is essential.

3. Break the silos of your project.

4. Deliver value frequently.

5. Working software is the primary measure of progress.

6. Build projects around motivated individuals.

7. The most effective way of communication is face-to-face.

8. Maintain a sustainable working pace.

9. Continuous excellence enhances agility.

10. Self-organizing teams generate most value.

11. Welcome changing requirements even late in the project.

12. Regularly reflect and adjust your way of work to boost effectiveness.