Question

What role does the polling agent play in cloud computing? How does it affect an SLA? 

Answer 1

A polling agent is a processing module that collects cloud service usage data by polling IT resources. This type of cloud service monitor is commonly used to periodically monitor IT resource status, such as uptime and downtime

A service is monitored by periodically testing whether the terms of an SLA have been met by all parties. This may require measuring a single variable or a complex aggregation of variables. For instance, ‘Host is reachable.’ may be measured by a single request/response action. In contrast, ‘Host uptime is greater than 99%.’ is often measured by polling a host multiple times and calculating the average rate of success