Integration Testing: A Complete Guide for Data Practitioners (2025 Edition)
In the rapidly evolving world of data engineering and DevOps, software systems are no longer monolithic. Instead, they rely on interconnected microservices, pipelines, APIs, and modular components. While unit testing validates individual parts, integration testing ensures that all the moving parts of your system work together as expected. It is an essential component of building robust data-driven applications. If you’re exploring data engineering courses , a data engineer online course , or considering enrolling in a data engineer program or DevOps engineer course , mastering integration testing will significantly enhance your skillset. In this guide by Prepzee , we’ll break down everything data practitioners need to know about integration testing in 2025—from concepts and tools to real-world strategies and certification-ready training. What is Integration Testing? Integration testing focuses on assessing how different modules or services of a system interact with one anot...