A failure of any component in a classic n-tier application usually results in application downtime. This requires an intervention from the operations team to bring up the application.
Using cloud-native architecture, we can design resilient (self-healing) systems which monitor non-performing assets and automatically take corrective actions to keep your applications always up and running.
A classic multi-tier web architecture forces you to make a difficult choice between cost and performance– an expensive solution that ensures performance under peak load conditions but which is mostly under-utilized versus a cost-optimized solution that leads to performance degradation during peak load.
A cloud-native architecture offers containerization and orchestration techniques which intelligently auto-scale the relevant components in high load conditions and scale them down under normal conditions.
Classic application architectures present challenges in rolling out application updates/upgrades.
The DevOps practice of continuous integration speeds up the development of a stable product through automated testing. Moreover, the automation of environments provisioning and deployment pipeline eliminates manual effort and improves deployment reliability.
In an application built using cloud-native architecture, a properly configured orchestration tool can seamlessly deploy updates to microservices without any downtime.