Which role should be assigned to Tier 1 SOC analysts to allow modification of predefined playbooks in Microsoft Sentinel?

The appropriate role for Tier 1 SOC analysts to modify predefined playbooks in Microsoft Sentinel is the Azure Sentinel Contributor role. This role provides sufficient permissions to create and manage playbooks, which are essential for automating responses to threats and incidents.

The Azure Sentinel Contributor role is designed to allow users to have a more active and creative role in handling security incidents. This includes the ability to modify existing playbooks or create new ones, tailoring the automation processes to fit the specific operational needs of the organization. With this role, Tier 1 analysts can ensure that playbooks are effective and aligned with the current security landscape.

In contrast, the other roles have more limited permissions. For instance, the Azure Sentinel Reader role is primarily for viewing information without any ability to modify resources. The Azure Sentinel Responder role allows users to respond to incidents but does not grant permissions for creating or modifying playbooks. The Azure Sentinel Automation Operator role focuses on executing playbooks rather than editing them. Therefore, assigning the Azure Sentinel Contributor role is essential for enabling Tier 1 SOC analysts to effectively manage and refine the incident response processes in Microsoft Sentinel.