Scrum
Scrum  only contains a small number of rules. These rules define the five  activities, three artefacts and three roles, that form the core of scrum. The  rules are defined in the Agile Atlas or in the Scrum Guides. The Scrum  framework must be represented by the techniques to implement activities,  artefacts, and roles in order to allow Scrum to actually be implemented. The  core of Scrum is decoupled from the implementation method in order to define  the main elements and working mechanisms and also provide greater freedom to  individual projects. The Scrum approach is empirical, gradual, and iterative.  It is based on the experience that many development projects are too complex  to be included in the master plan. The solution that many requirements seem  to be is not initially clear. This ambiguity can be resolved by generating an  interim result. Using this interim result, you can find missing requirements  and solution techniques that are more efficient than abstract clarification  steps. Alongside products, plans are also developed iteratively in phases in  Scrum. The long-term planning (product backlog) is continuously improved and  perfected. The blueprint (sprint backlog) is only created for the next cycle  (sprint). This means that the project planning is oriented towards the  substance. Empirical improvement is based on three pillars: Transparency:  Project progress and failure are regularly recorded and made visible to  everyone. Evaluation: Product properties are regularly provided and products  and processes evaluated. Adapt: Product, plan and process requirements are  not only specified once, but continuously refined. Scrum does not reduce the  complexity of the task, but improves the structure in smaller and less  complex components. The aim is to quickly and economically develop  high-quality products according to the established vision. Implementing a  vision in a finished product does not mean creating detailed specifications.  In Scrum, requirements are formulated as properties from the user  perspective. This requirements list is the product backlog. These  requirements are gradually set over a period of 2
    weeks, known as a sprint. The end of  a Scrum sprint is the delivery of the finished work (incremental product).  The incremental product needs to be in a state as delivered by the customer  (deliverable product). Following the cycle, the products, requirements, and  processes are further tested and developed in the next sprint. Scrum is  designed for teams of 3 to 9 people. Major development projects or large  development departments require a greater framework to organize the  coordination of several teams. If these synergies follow the same principles  as Scrum, this is referred to as a major agile framework.

