Monitoring is an important architectural concern that should be part of any solution, big or small, mission-critical or not, cloud or not. It should not be avoided at any cost.
Monitoring refers to the act of keeping track of solutions and capturing various telemetry information, processing it, identifying the information that qualifies for alerts based on rules, and raising them. Generally, an agent is deployed within the environment and monitors it, sending telemetry information to a centralized server, where the rest of the processing of generating alerts and notifying stakeholders happens.
Monitoring takes both proactive and reactive actions and measures on the solution. It is also the first step towards the auditability of the solution. Without the availability of monitoring log records, it is difficult to audit the system from various perspectives, such as security...