IoT development demands a specialized testing approach due to the integration of hardware and software components that must function reliably under diverse and resource-constrained conditions. Challenges include managing hardware dependencies, ensuring network resilience, and maintaining long-term stability, which necessitates comprehensive testing strategies. These strategies involve validating firmware integrity, testing hardware interactions, ensuring network reliability, and implementing robust security measures. CircleCI supports IoT development by providing automation capabilities that streamline testing processes, optimize performance validation, and ensure secure and compliant deployments. By enabling automation of builds, parallel testing, environment simulation, and staged rollouts, CircleCI helps IoT teams maintain high-quality standards, allowing developers to focus on creating reliable devices while handling the complexities of testing.