Full-stack observability is a practice of monitoring and understanding all layers of a software application, from front-end user interface to back-end infrastructure. It involves collecting and analyzing data from various sources to gain insights into an application's performance, availability, and user experience. This approach transcends traditional monitoring by providing end-to-end visibility across the entire IT stack. Most companies are confusing full-stack observability with individual monitoring tools, causing them to miss out on full IT stack visibility. Successful full-stack observability leads to streamlined troubleshooting, improved performance, and better customer experiences.