In this video, AWS Solutions Architect Techena demonstrates how to automate patching of applications and nodes across AWS accounts using AWS Systems Manager Quick Setup Patch Policy. The video covers key components like AWS Systems Manager, Patch Manager, Quick Setup, and State Manager. Techena walks through creating a patch policy, configuring scan and install schedules, selecting patch baselines, and deploying the policy organization-wide. The demo showcases how easily administrators can set up automated patching for their entire AWS infrastructure with just a few clicks, improving security and reducing manual effort.