Observability contains collection of below details
1.Metrics (Related to Infra)
2.Traces (Application Performance Monitoring)
3.Log (Log Analytics)
4.Uptime (Through Synthetic Monitoring)
5.UX (Real User Monitoring)
Monitoring tells you when something is wrong where observability gives why something is wrong with detailed system view.
Datadog is a monitoring and analytics tool for information technology (IT) and DevOps teams that can be used to determine performance metrics as well as event monitoring for infrastructure and cloud services. The software can monitor services such as servers, databases and tools.
The Datadog Agent is software that runs on your hosts. It collects events and metrics from hosts and sends them to Datadog, where you can analyze your monitoring and performance data.
Component of Datadog Agent and short intro for each