Final answer:
The major cost-benefit of cloud-native architecture is the use of managed services, which lead to high operational savings by reducing the need for in-house management and providing a pay-as-you-go pricing model.
Step-by-step explanation:
The major cost-benefit of adopting cloud-native architecture is Managed services with high operational savings. When organizations shift to a cloud-native architecture, they can take advantage of managed services provided by cloud providers. These services handle much of the infrastructure management and scaling, which reduces the need for in-house operational efforts and can lead to significant operational cost savings. Moreover, managed services often offer a pay-as-you-go model, which means companies only pay for the services they use, further minimizing costs.
Other advantages of cloud-native architecture such as Managed open source or open source-compatible services, Continuous Integration/Continuous Delivery (CI/CD), and Monitoring and automated recovery also contribute to operational efficiency and resilience but may not be the primary cost-benefit factor when compared to managed services.