Redundancy vs Reliability Engineering vs High Availability

Redundancy, reliability engineering, and high availability are three interconnected concepts in system design, each with its own strengths and weaknesses. While redundancy focuses on duplicating components to ensure continuous operation, reliability engineering takes a more holistic approach to designing systems that can withstand failures. High availability, on the other hand, is a broader concept that encompasses both redundancy and reliability engineering to ensure maximum uptime. As noted by experts like Tim Cook, CEO of Apple, and Elon Musk, CEO of Tesla, high availability is crucial for modern systems, particularly those that rely on cloud computing, such as Amazon Web Services (AWS) and Microsoft Azure.