PerformanceMeasurement
Amazon CloudWatch Internet Monitor calculates measurements about the performance for your application's internet traffic between client locations and Amazon Web Services. Amazon Web Services has substantial historical data about internet performance and availability between Amazon Web Services services and different network providers and geographies. By applying statistical analysis to the data, Internet Monitor can detect when the performance and availability for your application has dropped, compared to an estimated baseline that's already calculated. To make it easier to see those drops, we report that information to you in the form of health scores: a performance score and an availability score.
Performance in Internet Monitor represents the estimated percentage of traffic that is not seeing a performance drop. For example, a performance score of 99% for an end user and service location pair is equivalent to 1% of the traffic experiencing a performance drop for that pair.
For more information, see How Internet Monitor calculates performance and availability scores in the Amazon CloudWatch Internet Monitor section of the CloudWatch User Guide.
Types
Properties
Experience scores, or health scores, are calculated for different geographic and network provider combinations (that is, different granularities) and also totaled into global scores. If you view performance or availability scores without filtering for any specific geography or service provider, Amazon CloudWatch Internet Monitor provides global health scores.
How much performance impact was caused by a health event at a client location. For performance, this is the percentage of how much latency increased during the event compared to typical performance for traffic, from this client location to an Amazon Web Services location, using a specific client network.
The impact on total traffic that a health event has, in increased latency or reduced availability. This is the percentage of how much latency has increased or availability has decreased during the event, compared to what is typical for traffic from this client location to the Amazon Web Services location using this client network.
This is the percentage of how much round-trip time increased during the event compared to typical round-trip time for your application for traffic.