I am a Microsoft systems engineer working on Windows server since 2008 to Windows server 2019 and Exchange since 2010 to Exchange 2019 and Office 365 Migrations
-- Exchange Server : Designing Exchange Servers, Implementing Exchange Servers 2007/2019.
Configuring High Availability Features, CAS Arrays, DAG, Migrating Exchange Servers, Configuring Mail Flow, Configuring Organization wide transport rules.
Configuring Certificates, Configuring Outlook Anywhere, Custom Address Lists, Mailbox Tiering, Site Resiliency, Sizing Exchange Servers, Exchange Servers Disaster Recovery, Backing UP, Restoring, Implementing Exchange Edge Servers.
-- Active Directory: Designing Active Directory Infrastructure 2003 / 2019 , Sites and subnets, Group Policies, Replication Troubleshooting, Applying Best Practices, Migrating Active Directory Services, Controlling FSMO roles.
-- SQL Server installation , Migration , HA