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Uptime
Definition
The percentage of time a website, app, or service is working and available.
In Plain English
Uptime is like store hours actually kept.
Real-World Example
A vendor promising 99.9% uptime is describing expected availability.
Why It Matters for Your Work
Downtime can mean lost sales, support burden, and customer trust damage.
Common Mistake
Ignoring what happens when uptime promises are missed.