The job role of an Azure IaaS Specialist are as follows:-
Handle Windows server environment including server deployment, migrations, upgrades, patch management, application support, virus remediation, business continuity, operational and disaster recovery.
Designing Azure foundational elements like VNET, Blob storage, instances, functions, networking etc.
Understanding and working on Azure Disk, Azure Resource Monitoring, Azure Automation, Runbook and Azure Backup and Restoration.
Troubleshooting on Azure Virtual Network Gateway, ExpressRoute.
Building methods for cost management and billing, resource utilization and calculation.
Work on availability-set.
Create architecture diagrams, demonstrate Azure features.
Hope this helps!!
If you want to become the one, It is recommended to join Azure certification course today.