Part one of a blog post series explores the use of security policies for setting permissions in Dynatrace, focusing on the introduction of new permissions for environment roles that enhance the platform's security policies. These policies provide a flexible, scalable, and adaptable access management system, allowing for fine-grained control over settings and enabling teams to manage their own settings autonomously. The blog highlights the transition from role-based access control to a unified security policy system, simplifying permissions management through a central interface. It introduces environment permissions, which allow administrators to manage end-to-end access using security policies, and outlines new permissions for extension management and Cloud Automation. These developments aim to provide a comprehensive authorization mechanism across the Dynatrace platform, emphasizing reusability and consistency. The post also invites readers to explore further resources and anticipate the next installment, which will introduce a new central configuration interface for authorization systems.