What is the first step to evaluate the security posture of all workloads in an Azure landing zone?

To evaluate the security posture of all workloads in an Azure landing zone, the most appropriate first step is to implement secure score assessments. This involves assessing the security configurations and policies applied to the Azure environment. The secure score provides insights into potential vulnerabilities and areas for improvement based on the current security settings related to Azure resources.

The secure score assessment evaluates various components, including identity, devices, applications, and data, allowing organizations to understand their security level relative to Microsoft's best practices. It generates a score that indicates how well the organization's practices align with recommended security benchmarks.

Establishing this baseline is crucial for further actions, such as adding Microsoft Sentinel data connectors or configuring network security settings, as it directs the security strategy based on identified weaknesses and risk factors. By first implementing secure score assessments, organizations can prioritize which security measures to take based on the results of this initial evaluation.