Abhik Roy authored the ESP32 Secure DNS Implementation Guide for the espressif/developer-portal repository, delivering a comprehensive resource to help developers implement DNS over TLS and DNS over HTTPS on ESP32 devices. Leveraging expertise in C programming, IoT security, and embedded systems, Abhik provided practical examples and clear integration steps using the ESP DNS component, enabling secure DNS adoption with minimal code changes. The guide consolidated security best practices and actionable guidance, addressing the need for robust DNS protection in IoT deployments. This work demonstrated depth in technical writing and security integration, enhancing the developer experience and supporting secure ESP32 application development.