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Uptime is the percentage of time a website remains genuinely accessible and functioning correctly, as opposed to being down or entirely unreachable. It's one of the most fundamental metrics for judging the reliability of a hosting provider.

  • 99.9% uptime — roughly 8.76 hours of downtime per year
  • 99.99% uptime — roughly 52.6 minutes of downtime per year
  • 99% uptime — a considerably more significant 3.65 days of downtime per year
  • Downtime directly means lost visitors, lost sales, and lost leads
  • Frequent downtime can measurably hurt search engine rankings over time
  • It directly damages customer trust and overall brand credibility
  • For an eCommerce store especially, even brief downtime can translate into real, immediate revenue loss

Services like UptimeRobot or Pingdom can actively monitor a site around the clock, sending an immediate alert the moment it goes down — allowing a much faster response than simply discovering an outage after a customer happens to report it.

Most reputable hosting providers publicly guarantee at least 99.9% uptime, often with some form of compensation if that guaranteed threshold isn't consistently met — worth checking explicitly before committing to a specific host.

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