A company has an application that uses a microservice architecture. The company hosts the application on an Amazon Elastic Kubernetes Services…

This scenario requires a two-part solution: a mechanism for data collection (logs and traces) and a backend for data correlation and analysis.

Option A provides the most efficient collection strategy. FluentBit is a lightweight, high-performance log processor and forwarder, making it ideal for collecting logs from containerized environments like Amazon EKS with minimal resource overhead. OpenTelemetry is the open-source industry standard for instrumenting applications to generate and collect telemetry data, including traces, with minimal code changes, thus satisfying the "least development effort" constraint.

Option D provides the optimal backend for analysis. Amazon OpenSearch Service is a managed service specifically designed for log analytics, monitoring, and full-text search. It has built-in capabilities, known as Trace Analytics, to ingest, visualize, and correlate trace data from OpenTelemetry with corresponding log data, directly addressing the core requirement.

1. Amazon EKS Best Practices Guides: The guide on logging recommends Fluent Bit as a log router due to its efficiency and low resource consumption in a cluster. (Source: AWS EKS Best Practices Guides

Observability

Logging section. Retrieved from https://aws.github.io/aws-eks-best-practices/docs/observability/logging/)

2. AWS Distro for OpenTelemetry Documentation: "AWS Distro for OpenTelemetry is a secure

production-ready

AWS-supported distribution of the OpenTelemetry project. ...you can instrument your applications just once to send correlated metrics and traces to multiple AWS monitoring solutions." This supports using OpenTelemetry for low-effort trace collection. (Source: AWS Documentation

What is AWS Distro for OpenTelemetry?)

3. Amazon OpenSearch Service Developer Guide: "Trace Analytics in OpenSearch Dashboards lets you analyze trace data from your distributed applications. The feature is powered by OpenTelemetry..." This confirms OpenSearch is the purpose-built tool for correlating traces. (Source: Amazon OpenSearch Service Developer Guide

Trace Analytics section).

4. AWS Prescriptive Guidance: An end-to-end observability pattern for EKS involves using Fluent Bit to ship logs and the AWS Distro for OpenTelemetry (ADOT) Collector to ship traces and metrics to a backend like Amazon OpenSearch Service. (Source: AWS Prescriptive Guidance

Implement observability for an application on an Amazon EKS cluster

Pattern ID: PAT010).

5. AWS Glue Developer Guide: "AWS Glue is a serverless data integration service that makes it easy to discover

prepare

and combine data for analytics

machine learning

and application development." This defines its role as ETL

distinct from a monitoring and analysis platform. (Source: AWS Glue Developer Guide

What is AWS Glue?).