## 2 Literature Review
### Asset Management Methodologies and Models Applied to Warranty Management
#### 2.2.5 Digital Servitization and Predictive Maintenance: Adaptation of Warranty Policies  
Digital servitization and predictive maintenance transform warranty management by allowing coverage policies to dynamically adapt to the real-world conditions and specific usage of each asset. By using advanced technologies such as artificial intelligence (AI) and the Internet of Things (IoT), companies can monitor asset health in real time and analyze operational data, adjusting warranties based on current equipment wear and condition.  
* Real-Time Monitoring and Optimization: Digital servitization turns physical products into smart assets that collect continuous data on their status. This allows for preventive adjustments and resource optimization before a breakdown occurs, improving equipment reliability and, consequently, customer experience.
* Coverage Personalization: With predictive maintenance, warranty policies are tailored to the asset's specific condition and usage profile. This means that rather than following standard coverages, warranties reflect the actual performance and wear of the equipment, offering protection that better meets customers' individual needs. This approach creates a personalized experience, increasing user satisfaction by aligning expectations with the asset's condition and operational capability.
* Cost Reduction and Increased Availability: By anticipating failures and avoiding unnecessary interventions, companies reduce maintenance costs and minimize downtime. This not only reduces the frequency of unexpected claims, but also ensures greater asset availability, optimizing the aftersales service experience and strengthening the customer-company relationship.  
Together, digitalization and predictive maintenance turn warranty management into an adaptable and proactive model that provides a more accurate and reliable service. This ensures that warranties not only cover asset failures, but also contribute to maximizing their useful life and improving customer satisfaction, with customers receiving personalized,high-quality service. As a descriptive example, it is shown how digital servitization is applied in the automotive industry through the integration of connected vehicles and preventive maintenance services. In this context, digital servitization facilitates the implementation of five levels of autonomy, from assisted driving to fully autonomous driving. Each level of autonomy contributes to reducing unplanned maintenance interventions and optimizes the customer experience, directly aligning with a warranty model based on real conditions of use. Digital servitization transforms physical products into smart solutions that, thanks to AI and IoT, allow the creation of automated and personalized support services. This improves the customer experience and facilitates warranty management adapted to the real state of the assets, helping to reduce maintenance costs and optimize customer loyalty. This model, in which the product is only one part of the overall value offered, drives companies towards a strategic business approach based on aftersales service and adaptability [24]. Together, digitalization and predictive maintenance turn warranty management into an adaptable and proactive model that provides a more accurate and reliable service. This ensures that warranties not only cover asset failures, but also contribute to maximizing their useful life and improving customer satisfaction, with customers receiving a personalized and high-quality service.