Explore high availability (HA) and failover concepts in this 23-minute video tutorial. Learn the principles of HA, its importance, and how to implement a failover model. Follow a step-by-step demonstration on deploying high availability applications, including server setup, installing keepalived, creating standby instances, and configuring keepalived.conf. Gain insights into process tracking and understand how to maximize uptime and accessibility for websites and applications serving high-traffic content.