Applications observability implementation with OpenTelemetry standard by Eldar Aliiev 

During this session we discussed standard flows of observability data (logs, metrics & traces) collection and unification of those data collection with OpenTelemetry framework:
- Reviewed standard logging, metrics collection and tracing flows with ELK stack, Grafana/Loki, Prometheus, Jaeger and Zipkin.
- Meet with OpenTelemetry (OTel) standard basics.
- Compared observability implementation with OTel and separate collection approach.
- Understood difference between OTel API & SDK.
- Discussed languages support of OTel.
- Verified OTel features production readiness.
- Reviewed ways of applications instrumentation with OTel (Automatic and manual).
- Meet with OTel collector features.
- Reviewed deployment strategies for OTel collector.
- Learn how to configure OTel collector.
- Discussed different approaches of logs collection with OTel collector.
- Meet with way for integration of OTel with Kubernetes applications.
- Reviewed different ways of observability data visualization with Grafana.
- Performed live demo of application development and instrumenting with OTel framework to collect and ship observability data to Prometheus, Loki & Jaeger with visualization in Grafana.