Khairul Zebua, a senior DevOps engineer at XL Axiata, gave a presentation on getting rid of obstacles with a DevOps mindset. He discussed challenges faced by both developers and operations teams and how DevOps aims to break down silos between these teams through continuous integration, delivery, and monitoring practices. Zebua also covered various DevOps tools and provided examples of how XL Axiata has implemented DevOps practices like Jenkins pipelines to streamline their software development and delivery processes.