ISO 20121 in Practice – Three Pathways to Truly Sustainable Event Management

By wdo, 3 December, 2025

Sustainability in the event business sounds promising everywhere — until it gets serious. ISO 20121 is exactly where ambition and reality part ways: it demands systematic change, deep transparency, and the courage to question long-established routines. Those who take this path are the ones reshaping the industry.

ISO 20121 is far more than a standard — it is a development path, a promise of quality, and a powerful signal for an industry striving to become more sustainable, more professional, and more future-ready. This panel demonstrates how different the journeys toward certification can look — and how much potential lies in every single step.

  • Clemens Arnold, Managing Director of 2bdifferent, opens the talk with a concise introduction to the relevance of ISO 20121 for event management and then leads the discussion. The three experts represent three stages of the ISO journey — creating a unique overall perspective:
  • Silke Fontius, Consultant at Convention Bureau Rhein-Neckar | Metropolregion Rhein-Neckar GmbH, shares insights from the initial phase of certification as the organizer of a trade fair format. She highlights how an organization can approach the first steps, build initial structures, and experience the momentum that emerges when sustainability becomes a strategic priority.
  • Thomas Wiggermann, Managing Partner | Healthcare Convention, a brand of Europe Convention GmbH & Co. KG, offers an agency perspective shortly before auditing — the point at which processes sharpen, teams grow closer, and expectations for professionalism and credibility rise. His insights show how a system certification creates clarity, focus, and measurable progress.
  • David Baldig, Director Corporate Responsibility EMEA | George P. Johnson GmbH, provides a look into international practice and the added value of an already established ISO 20121 certification. He demonstrates how globally active companies use sustainability as a strategic advantage — and how ISO 20121 proves its worth in large teams, complex projects, and international networks, including in terms of resource and cost reduction.

Three perspectives. Three stages of development. One shared goal — and one shared path: companies that take responsibility, build trust, and drive the event industry forward.

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Clemens Arnold

By wdo, 12 December, 2023

Clemens Arnold ist Geschäftsführer der 2bdifferent GmbH & Co. KG, einer Beratungsagentur für Nachhaltigkeit in der Veranstaltungswirtschaft. 

Mit einer umfassenden Expertise berät er Unternehmen, Verbände und Organisationen in der Berechnung von CO₂-Bilanzen und der Optimierung von Eventformaten nach nachhaltigen Kriterien. 

Er hat eine Ausbildung zum Corporate Responsibility Manager an der Universität Bayreuth und ist Mitglied in der Jury des PSI Sustainability Awards. Zudem vermittelt er als Dozent in verschiedenen Hochschulen und Veranstaltungen über nachhaltiges Eventmanagement und CSR.

vision stage Halle 4

Clemens Arnold
Managing Director 2bdifferent
Beschreibung_en

Clemens Arnold is the managing director of 2bdifferent GmbH & Co. KG, a consulting agency for sustainability in the event industry.

With his comprehensive expertise, he advises companies, associations and organisations on calculating CO₂ balances and optimising event formats according to sustainable criteria.

He trained as a corporate responsibility manager at the University of Bayreuth and is a member of the jury for the PSI Sustainability Awards. He also lectures on sustainable event management and CSR at various universities and events.

vision stage Hall 4

Silke Fontius

By wdo, 1 December, 2025

Silke Fontius ist Referentin im Convention Bureau Rhein-Neckar und Expertin für strategische Kommunikation und nachhaltige Veranstaltungsformate. Mit einem feinen Gespür für Trends und einem starken Netzwerk in der MICE-Branche entwickelt sie kreative Konzepte, die Menschen, Orte und Ideen wirkungsvoll verbinden. Ihr Fokus liegt auf der Förderung regionaler Kooperationen und der Umsetzung zukunftsfähiger Eventlösungen. Als Impulsgeberin für nachhaltige Transformation bringt sie frische Perspektiven in die Veranstaltungslandschaft. Mit Leidenschaft und Präzision gestaltet sie Kampagnen, die begeistern und bewegen.

vision stage | Halle 4

Silke Fontius
Convention Bureau Rhein-Neckar
Beschreibung_en

Silke Fontius is a consultant at the Rhine-Neckar Convention Bureau and an expert in strategic communication and sustainable event formats. With a keen sense for trends and a strong network in the MICE industry, she develops creative concepts that effectively connect people, places and ideas. Her focus is on promoting regional cooperation and implementing sustainable event solutions. As a driving force for sustainable transformation, she brings fresh perspectives to the event landscape. With passion and precision, she designs campaigns that inspire and move people.

vision stage | Hall 4

Thomas Wiggermann

By wdo, 1 December, 2025

Thomas Wiggermann ist geschäftsführender Gesellschafter der Healthcare Convention a brand of Europe Convention GmbH & Co. KG, einer Agentur für medizinische Events und Kongresse. 

Er leitet das Unternehmen mit Fokus auf Eventmanagement, Compliance, Qualität und nachhaltigen Veranstaltungsformaten.

Als Geschäftsführer hat Thomas Wiggermann langjährige Erfahrung in der Planung und Umsetzung von Kongressen, medizinischen Fortbildungen und komplexen Eventformaten. 

Mit seinem unternehmerischen Hintergrund und seiner verantwortlichen Rolle begleitet er Healthcare Convention in der Weiterentwicklung hin zu professionellen, compliance- und qualitätsorientierten Events – auch mit Blick auf Nachhaltigkeit und moderne Standards.

vision stage Halle 4

Thomas Wiggermann
Geschäftsführender Gesellschafter der Healthcare Convention
Beschreibung_en

Thomas Wiggermann is the Managing Partner of Healthcare Convention, a brand of Europe Convention GmbH & Co. KG, an agency specializing in medical events and congresses.

He leads the company with a strong focus on event management, compliance, quality, and sustainable event formats.

As Managing Partner, Thomas Wiggermann brings many years of experience in planning and delivering congresses, medical education events, and complex event formats.

With his entrepreneurial background and leadership role, he guides Healthcare Convention in its ongoing development toward professional, compliance-driven, and quality-focused events — always with an eye on sustainability and modern industry standards.

vision stage Hall 4

David Baldig

By wdo, 18 December, 2023

David Baldig, Director Corporate Responsibility EMEAI bei der international tätigen Agentur George P. Johnson.

David ist Director Corporate Responsibility EMEAI bei George P. Johnson (GPJ), einer weltweit führenden Agentur für strategisches Erlebnismarketing. Er verantwortet die Nachhaltigkeitsbemühungen in der EMEAI-Region und ist ein führendes Mitglied des globalen Corporate Responsibility Council von GPJ. Jüngst leitete David die Implementierung der ISO 20121, des internationalen Standards für nachhaltiges Veranstaltungsmanagement, bei GPJ Deutschland, welche 2024 die erfolgreiche Zertifizierung erreichten. 

fwd: stage Halle 5 + vision stage Halle 4

 

David Baldig
George P. Johnson GmbH
Beschreibung_en

David Baldig, Director of Corporate Responsibility EMEAI at the international agency George P. Johnson.

David is Director of Corporate Responsibility EMEAI at George P. Johnson (GPJ), a leading global agency for strategic experiential marketing. He is responsible for sustainability efforts in the EMEAI region and is a leading member of GPJ's global Corporate Responsibility Council. David recently led the implementation of ISO 20121, the international standard for sustainable event management, at GPJ Germany, which achieved successful certification in 2024.

fwd: stage Hall 5 + vision stage Hall 4

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