About

About me — Ferdi Lethen-Oellers · M365 Röstmeister
About me

Der M365
Röstmeister.

Ferdi Lethen-Oellers
Microsoft MVP Senior Consultant Speaker Author DACH · NRW

Microsoft MVP for Microsoft 365 and Microsoft Viva. Senior Modern Workplace Consultant at amexus. I make Microsoft 365 understandable — no buzzwords, no filler. Coffee helps. #EspressoM365Fusion

MVPSince 2022
10+Years M365
8Certifications
1Book
Ferdi Lethen-Oellers — Der M365 Röstmeister
#EspressoM365Fusion
M365 Röstmeister
🏆
Microsoft MVP 2022–2026
📘
Author · Wiley/Dummies
🎤
Speaker · DACH & International
#EspressoM365Fusion
Expertise

My Topics

01
Microsoft Copilot & Copilot Studio

Embedding AI meaningfully into daily work — from M365 Copilot to custom agents.

02
Microsoft Viva Suite

Employee Experience Platform — Learning, Engage, Connections, Amplify and Pulse.

03
Power Platform

Power Apps, Automate and BI — digitalising processes without programming knowledge.

04
SharePoint & Microsoft Teams

Collaboration and intranet structures that people actually use. No shelf-ware.

05
M365 Administration & Security

Tenant management, compliance and security strategies for modern workplaces.

06
Microsoft Azure

From fundamentals to Management Groups — cloud architecture explained and implemented.

Career

Professional history

Work experience
06/2022 — present
Senior Modern Workplace Consultant
amexus Informationstechnologie GmbH & Co. KG
10/2022 — present
Freelance · Blogger & Speaker
Microsoft 365 · Self-employed
06/2019 — 05/2022
Senior Consultant
GOB Software & Systeme GmbH & Co. KG
Team Collaboration
07/2017 — 06/2019
Consultant
GOB Software & Systeme GmbH & Co. KG
Team SharePoint
06/2014 — 06/2017
Junior Consultant
GOB Software & Systeme GmbH & Co. KG
Team SharePoint
06/2007 — 03/2010
IT-Administrator · Customer Service
CEFCO GmbH
03/2006 — 10/2006
IT-Administrator
Bezirksregierung Düsseldorf
Education
2010 — 2013
Bachelor of Business Administration
HSD — Hochschule Düsseldorf
09/2003 — 02/2006
IT-System-Elektroniker
Bezirksregierung Düsseldorf
Vocational training
Early career
05/2013 — 05/2014
Trainee
GOB Software & Systeme GmbH & Co. KG
02/2013 — 04/2013
Working Student
GOB Software & Systeme GmbH & Co. KG
Community

Organiser · Blogger · Speaker

2023 — present
M365 Röstmeister Blog

Writing about Microsoft Viva, Power Platform and everything around Microsoft 365 apps & services — in the Espresso fusion style.

Blogger
03/2023 — present
M365 News Sendung

Every second Tuesday of the month — discussing the latest Microsoft 365 updates and features with the community.

Organiser
11/2022 — present
M365 Barista Talk · Podcast

Podcast covering Microsoft 365 topics and the adoption mindset — with a good espresso in hand.

Podcast Organiser
09/2022 — present
MVP TreffPunkt

Bi-weekly community exchange about Microsoft 365 topics — co-organised with Anastasios and Matthias.

Co-Organiser
2022 — 2023
Collaboration Hero

Twice a year — three days with external speakers covering Microsoft 365 collaboration topics.

Organiser
Upcoming 2026
Events & Conferences

MVP Week Münster · Experts Live UK London · EasyWay365 Learning Week · Azure Meetup Düsseldorf

Speaker
Certifications

Microsoft Certified

06/2025 — 06/2026
Microsoft MVP · Microsoft 365 & Microsoft Viva
06/2024 — 06/2025
Microsoft MVP · Microsoft 365 & Microsoft Viva
06/2023 — 06/2024
Microsoft MVP · Apps & Services
04/2023 — 04/2025
Microsoft 365 Certified Enterprise Administrator Expert
04/2023
MS-101 · Microsoft 365 Mobility and Security
03/2022 — 03/2025
MS-700 · Teams Administrator Associate
02/2023 — 02/2025
Power Platform App Maker
01/2023
MS-100 · Microsoft 365 Identity and Services
10/2023 — 10/2024
Power Platform Fundamentals
Publication

The Book

Microsoft 365 Administration für Dummies
Wiley · Dummies
Ferdi Lethen-Oellers
Published

Microsoft 365 Administration für Dummies

The practical guide for Microsoft 365 administrators in the DACH region — from tenant setup to security strategies. Written for people who want to understand what they are doing, not just click through wizards. With the Röstmeister approach: clear, direct, no filler.

Publisher: Wiley Series: …für Dummies Language: German Author: Ferdi Lethen-Oellers
Contact

Let’s talk.

Questions about Microsoft 365, speaking requests, or just want to exchange ideas over an espresso? I am happy to hear from you.

📞
Phone +49 163 / 6133462
📍
Location Jüchen, NRW · Germany