During November 2025, Sigalvo enhanced Azure’s monitoring capabilities by updating the metric alerting API in the Azure/azure-rest-api-specs repository to the 2024-03-01-preview version. He developed and released a new .NET SDK for Microsoft.Insights metric alerts in Azure/azure-sdk-for-net, focusing on improvements to MetricAlertData that support both dynamic and static PromQL criteria. Working primarily in C# and leveraging API development and SDK design skills, Sigalvo ensured consistency between REST and SDK interfaces. These updates streamlined customer onboarding and improved usability, reflecting a focused, in-depth approach to evolving Azure Monitor’s metric alerting features for developers and users.