Resiliency is the capacity of the computer system to survive a bad day. The concept is broader than the prevention of failure because the latter approach cannot guarantee anything when applied in real-life situations at scale. The former implies graceful behavior of the cloud infrastructure during the disruption events and its recovery and adaptation after them. A resilient cloud platform can continue working during any kind of disaster – whether it is a power outage, a natural catastrophe affecting the whole data center, or a surge of traffic that is expected to bring the system down. The application should either stay alive or recover quickly enough to let end users notice nothing at all. Three Goals of Resiliency To better comprehend resiliency, it is necessary to break down its key objectives: High Availability (HA). Making sure that the service is always available. The metric can be expressed in nines (such as 99.99%). Disaster Recovery (DR). The strategy for responding to a total disaster (e.g., loss of a whole region) in order to restore the system's functionality. The main focus lies on RTO (the period of downtime) and RPO (the amount of data. Visit - https://www.sevenmentor.com/cloud-computing-certification-course-training-in-pune.php