The Online Service

Who we are, what we do, and what motivates us.

It's All About Trust is an online service provided by Expert Systems AG, a subsidiary established under BELLEVUE Investments GmbH & Co. KGaA in 2011. Located in Berlin near the Spree river, our team of 26 concept and graphic designers, web developers, and product and marketing professionals has been working on the development and expansion of our range of online services since 2012.
A good reputation is more valuable than money.
Phililius Syrus, 1st century BC
ProvenExpert Profil

Why we do what we do:
The concept behind

As a young startup, we understand that acquiring new customers is about being able to show what your business can do. Recommendations from existing customers are the best way to get the word out about your services and attract new business. And our own experience backs this up. There's no way around it: if you want to expand and grow, you need to see your current customers as an invaluable resource for tapping into new sources of income. But only one out of every ten service providers actually uses review marketing to their advantage. Many simply lack the time, experience, or knowledge to effectively collect reviews and ratings and put them to use as marketing materials. This is where ProvenExpert comes in. Simple, yet powerful review marketing is our forte.
Even ProvenExpert itself leverages the power of feedback to successfully attract new business.

Strong partners. Powerful services.

With BELLEVUE Investments GmbH & Co. KGaA and the consulting team from PRESTO CAPITAL on our side, we are able to overcome the challenges that every young company faces and benefit from the comprehensive support of our partners to push our services to new levels.
The latest from ProvenExpert
Internal survey: customers become ambassadors - how travel agents and tour operators use reviews
Press release
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Vacancies at
We're always looking for creative, dynamic, and committed people to join our team.

Have questions about our company?

Simply send us an email or get in touch through Facebook, Twitter, XING, or LinkedIn. We are looking forward to hearing from you.
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