This blog explores how to build an effective observability stack by combining OpenTelemetry for PHP and Azure App Service logs. It explains the key components of observabilityu2014metrics, logs, and tracesu2014and highlights the benefits of OpenTelemetry's vendor-neutral framework for PHP applications. The article also covers Azure App Serviceu2019s powerful logging features, including application logs, web server logs, and detailed error logs. By integrating these tools, developers can achieve real-time monitoring, enhance debugging, and optimize application performance. Discover how to create a robust observability stack that ensures reliability, improves troubleshooting, and delivers seamless user experiences.