Description: The failure model in distributed systems is a conceptual framework that describes how failures occur and how they can be managed in an environment where multiple computers work together to achieve a common goal. This model is fundamental for understanding the reliability and resilience of distributed systems, as it allows for the identification of different types of failures, such as communication failures, hardware failures, and software failures. Additionally, the failure model provides a common language for designers and developers, facilitating the creation of recovery and fault tolerance strategies. The main characteristics of this model include the classification of failures into categories such as permanent, transient, and intermittent failures, as well as the identification of the effects these failures can have on the system as a whole. The relevance of the failure model lies in its ability to guide the design of robust distributed systems, ensuring they can continue to operate even in the presence of failures, which is essential in critical applications where availability and data integrity are paramount.