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In the world of Cloud Infrastructure, maintaining a high software availability means that a hosted system or component is continuously operational with practically zero downtime or close to 100% uptime.
However, the concept of high availability is often misinterpreted due to the ambiguity of its meaning. For example, network availability is different from functional availability. This means that even if you are paying for a 99.999% of network availability it doesn't guarantee that your applications are functional and/or operational 99.999% of the time. It is critical to understand the difference.
- Software availability
- The ins and outs of High Availability
- Measures you can take to prevent down time
- Best practices for cloud architecture