About

Erik’s blog provides curated updates and insights regarding Microsoft Teams, Microsoft 365 Copilot, Microsoft 365 and related apps and services all aimed at enhancing teamwork and productivity. The primary emphasis is on Microsoft Teams as a platform and central hub for modern collaboration, facilitating increased efficiency for individuals and organizations.

Why this blog?

Today’s world changes steadily and rapidly. erik’s blog captures and highlights some news from the communication and collaboration space. The intention of the blog is to inform and evangelize others as well as being erik’s notes collection, shared publicly.

Who writes this?

The blog is written by myself, Erik, in my leisure time. I like to make people aware of all the awesome tech available to be more productive and get more things done better than today. Opinions are my own.

Background

I am a Senior Technology Consultant at abtis, specializing in the design, consulting, and delivery of AI‑powered Modern Work solutions built on Microsoft Cloud and AI Services. My mission is to help organizations and their people achieve more by fully embracing an AI‑driven, modern, and secure digital workplace. I bring more than 17 years of experience in the IT industry.

Core Expertise

My work focuses on architecting, implementing, and optimizing enterprise environments across identity, collaboration, security, and communication platforms. Typical technologies and services I work with include:

  • Identity & Access: Windows Server Active Directory, Entra ID, Entra Connect Sync, Entra Cloud Sync, Conditional Access, MFA, Privileged Identity Management (PIM)
  • Modern Work & Collaboration: Microsoft 365, Microsoft 365 Copilot, Teams, SharePoint Online, OneDrive for Business
  • Messaging & Hybrid Architectures: Exchange Server, Exchange Online, Exchange Hybrid
  • Automation & Administration: PowerShell
  • Voice & SBC Infrastructure: Skype for Business, AudioCodes Mediant SBCs, AudioCodes Analog Device Gateways, SIP Trunks for Teams/PBX/PSTN

Professional Activities

I support customers throughout the entire project lifecycle from presales and assessments to delivery and long-term transformation. My responsibilities include:

  • Conducting assessments and facilitating workshops
  • Designing concepts and solution architectures
  • Leading and executing complex implementation projects
  • Managing migrations (e.g., Microsoft 365 tenant‑to‑tenant)
  • Troubleshooting and resolving issues at 2nd‑level support
  • Ensuring continuity and quality across workstreams through deep technical expertise

Certifications & Credentials

I am committed to continuous learning and regularly validate my knowledge through industry-recognized certifications. My credentials include:

  • Microsoft Certified Trainer (MCT), 2013–2025
  • Microsoft Applied Skills: Create agents in Microsoft Copilot Studio
  • Microsoft Applied Skills: Prepare security and compliance to support Microsoft 365 Copilot
  • Microsoft 365 Certified: Collaboration Communications Systems Engineer Associate
  • Microsoft Certified Teamwork Administrator
  • Microsoft 365 Certified: Administrator Expert
  • Microsoft Certified: Identity and Access Administrator Associate
  • Service Adoption Specialist
  • Azure Administrator Associate
  • Microsoft Certified Solutions Expert (MCSE) – Productivity
  • Microsoft Certified Solutions Expert (MCSE) – Communication
  • Barracuda Essentials for Office 365 Certified Product Specialist
  • Full contact center solution with Power Platform & Dynamics 365
  • TOGAF 9 Certified
  • … and other role‑specific certifications

Stay Connected – Follow Me On …

LinkedInhttps://de.linkedin.com/in/ekleefeldt
BlueSkyhttps://bsky.app/profile/erik365.bsky.social
Twitter/Xhttps://twitter.com/erik365online
Xinghttps://www.xing.com/profile/Erik_Kleefeldt
Microsoft TechCommunityhttps://techcommunity.microsoft.com/t5/user/viewprofilepage/user-id/32867