Guido Grillenmeier is Chief Technologist with Semperis. Based in Germany, Guido has been a Microsoft MVP for Directory Services for 12 years. He spent 20+ years at HP/HPE as Chief Engineer. A frequent presenter at technology conferences and contributor to technical journals, Guido is the co-author of Microsoft Windows Security Fundamentals. He’s helped various customers secure their Active Directory environments, and supported their transition to Windows 10/m365 and Azure cloud services. Guido has often spoken at various technology conferences, including the original NetPro’s Directory Experts Conference (DEC), later called Quest Technical Experts Conference (TEC), and has been a speaker at various other Microsoft-technology related conferences, such as Microsoft Tech-ED, IT Forum and Windows Connections.