Preface
Monitoring software applications used to be an afterthought – when an outage happened, a check was put in place to monitor the functionality of the software or the status of part of the infrastructure where the software system ran. It had never been comprehensive, and the monitoring infrastructure grew organically. The first-generation monitoring tools were only designed to meet such a simple, reactive approach to rolling out monitoring.
The widespread use of the public cloud as a computing platform, the ongoing trend of deploying applications as microservices, and the delivery of Software as a Service (SaaS) with 24x7 availability made the operating of software systems far more complex than it used to be. Proactive monitoring became ...
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