Claus-Stefan Duffner

Online congress coaching & mentoring, online business mentor, graduate computer scientist

Claus-Stefan Duffner
TOP SERVICE PROVIDER 2024
TOP RECOMMENDATION 2024
4.97 out of 5
Excellent
67 Reviews
Contact information
Claus-Stefan Duffner is a Digital Business Mentor for Your Freedom and founder of ISDD GmbH. He has been helping people and companies to build their scalable digital online business for over 25 years. As a graduate computer scientist, he knows the...

Contact information

Claus-Stefan Duffner
Ulimited Dream Life LLC
530B Harkle Rd STE 100
Santa Fe, New Mexico (NM) 87505
United States of America
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Images & Videos

100% Recommended
5 stars 63
3 stars 0
2 stars 0
1 star 0
Customer service
Excellent (4.97)
Cost/Benefit
Excellent (4.92)

65 Reviews on ProvenExpert.com

4.97 out of 5
Excellent
4.00 out of 5
Good
Recommendation
the whole type of structure is good and easy to understand and motivating
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Customer review & rating for:
Claus-Stefan Duffner
09/16/2024SILVIA A.
5.00 out of 5
Excellent
Recommendation
I thought it was very good how Claus-Stefan guided the interviewees to the topics/questions.
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Customer review & rating for:
Claus-Stefan Duffner
09/09/2024A.
5.00 out of 5
Excellent
Recommendation
Fantastic interviews with valuable impulses!
Thank you 🙏❤
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Customer review & rating for:
Claus-Stefan Duffner
09/09/2024M.
5.00 out of 5
Excellent
Recommendation
Very well selected interesting interviews. Huge amount of information. Superbly done!
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Customer review & rating for:
Claus-Stefan Duffner
09/09/2024K.
5.00 out of 5
Excellent
Recommendation
Thank you very much for your valuable frequency-increasing work.
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Customer review & rating for:
Claus-Stefan Duffner
09/09/2024T.
5.00 out of 5
Excellent
Recommendation
Your passion is wonderful - and the journey continues.
Thank you soooo much!
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Customer review & rating for:
Claus-Stefan Duffner
09/09/2024A.
5.00 out of 5
Excellent
Recommendation
There are the high-quality and very interesting congresses and then there is all the valuable and helpful information for digital business. I also find all the offers very generous. Thank you very much.
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Customer review & rating for:
Claus-Stefan Duffner
09/09/2024I.
5.00 out of 5
Excellent
Recommendation
I can only repeat myself and say thank you. For the wonderful interview partners, for the wide range of topics, for the reliable organization, for the warmth and love that you radiated.
It was inspiring and enriching. A gift. Thank you
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Customer review & rating for:
Claus-Stefan Duffner
09/08/2024U.
5.00 out of 5
Excellent
Recommendation
1000 thanks for your beautiful, touching and so valuable work. The gift you have given us cannot be overestimated. So many conscious and wonderful people you have invited. I feel richly blessed. Thank you, thank you, thank you.
See you again

Uschi
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Customer review & rating for:
Claus-Stefan Duffner
09/08/2024U.
5.00 out of 5
Excellent
Recommendation
The work of Claus-Stefan Duffner was excellent! Very good and understandable expression, thank you very much 🧡💚💛
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Customer review & rating for:
Claus-Stefan Duffner
09/08/2024E.
5.00 out of 5
Excellent
Recommendation
Everything was perfect - it couldn't have been better.
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Customer review & rating for:
Claus-Stefan Duffner
09/08/2024R.
5.00 out of 5
Excellent
Recommendation
Dear Claus-Stefan, thank you thank you thank you for this wonderful congress and the brilliant selection and composition of the speakers. The talks were all very emphatic and inspiring. I particularly liked the fact that as a moderator you gave the speakers a lot of space while still being very present. With your courage to use color, you are also a great role model for men in terms of fashion! Thank you thank you thank you for your commitment to a better world!
I am already looking forward to a High Frequency Congress 4!
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Customer review & rating for:
Claus-Stefan Duffner
09/08/2024R.
5.00 out of 5
Excellent
Recommendation
The topic was very well chosen, the variety very diverse. What I liked best was the timing of the individual interviews, perfect for working people who only really have time in the evening❣ Claus-Stefan, you were a very good interviewer 👍
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Customer review & rating for:
Claus-Stefan Duffner
09/08/2024D.
5.00 out of 5
Excellent
Recommendation
Your rating: Very interesting and informative congress, always a pleasure!
I have already watched the previous High Frequency congresses and am already looking forward to Claus-Stefan's next congress.
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Customer review & rating for:
Claus-Stefan Duffner
09/08/2024M.
5.00 out of 5
Excellent
Recommendation
It was super exciting. I was able to take a lot away with me. An absolute enrichment!
Thank you very much Claus-Stefan Duffner
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Customer review & rating for:
Claus-Stefan Duffner
09/04/2024M.
5.00 out of 5
Excellent
Recommendation
Dear Claus-Stefan, yes, what can I say, there was so much valuable information and everything was a very special experience for me, because everything was packed with valuable impulses from start to finish. I really feel extremely enriched and very well informed by this congress with the valuable interviews. Thank you from the bottom of my heart for your work and the time you gave us because it was certainly a lot of work to put all this together. I pay you my great respect! For me, you are a great "world changer" with a heart.
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Customer review & rating for:
Claus-Stefan Duffner
09/04/2024S.
5.00 out of 5
Excellent
Recommendation
I really enjoyed the variety of speakers at this wonderful online congress and the different interviews were very inspiring and made me think and put things into practice. It was a real enrichment for me - many thanks to everyone involved and especially to Claus-Stefan for his thoughtful way of asking questions and listening to the other person.
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Customer review & rating for:
Claus-Stefan Duffner
09/04/2024S.
5.00 out of 5
Excellent
Recommendation
This congress came at just the right time. I was totally drained of energy and could now recharge my batteries. Although I don't normally buy congress packages, I immediately treated myself to the VIP bundle - so valuable! Many thanks to you - you have inspired me so much.
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Customer review & rating for:
Claus-Stefan Duffner
09/04/2024D.
5.00 out of 5
Excellent
Recommendation
Claus-Stefan Duffner is one of the few people I know who lives what he teaches. Authentic, empathetic and competent, he has an unerring instinct for the heart of the matter and the optimal approach to a solution. Dear Claus-Stefan, thank you from the bottom of my heart for your warm, open and goal-oriented support. Best regards - Simone K. Riecke
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Customer review & rating for:
Claus-Stefan Duffner
08/20/2024Simone K. R.
5.00 out of 5
Excellent
Recommendation
I found all the contributions very stimulating and beneficial, some of them also exciting new territory. I have also purchased some courses, which I will look at in my own time. You're doing a great job! Thank you very much. I know how much effort it takes.
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Customer review & rating for:
Claus-Stefan Duffner
08/18/2024A.
2 Reviews from
1 other source
5.00 out of 5
Excellent
5.00 out of 5
Excellent
2 reviews on Google
 
09/06/2024
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All reviews and experiences about Claus-Stefan Duffner are the subjective opinions of those who compose and submit them  |  The profile owner is responsible for the contents of this page  |   Profile active since 05/15/2020  |  Last update: 10/02/2024   |  Report profile

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