GSTC Staff

Randy Durband, Chief Executive Officer

Randy Durband has had two careers in travel and tourism – twenty-plus years in senior leadership positions at some of the finest U.S. tour operators, having served as President for Travcoa, INTRAV, and Clipper Cruise Lines, (brands within TUI Travel plc), plus Executive Vice President of Tauck World Discovery. Following that, in his second travel and tourism career, Randy advanced the work of Sustainable Tourism as an advisor, consultant, and speaker.  He brings his knowledge of the business of travel, his global network of travel professionals, and a passion for sustainability to support the GSTC and the general sustainable tourism movement. He has held several board positions and committee memberships in travel and tourism organizations, and is a frequent speaker on sustainable tourism issues.

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Roi Ariel, General Manager

Roi Ariel has been focusing on responsible travel and sustainable tourism over the past decade. In his role at GSTC, Roi manages the organization’s memberships, communications, events and operations. He previously worked with UN-ESCAP researching sustainable development and green growth in Southeast Asia, and on sustainability issues with the Pacific Asia Travel Association (PATA). Prior to his move to Asia, Roi worked with Friends of the Middle East in Israel as the Green Economy Initiative Advisor. Roi holds a master degree in Applied Economic and Social Development from the National Chengchi University in Taipei, and a bachelor degree in International Relations and Comparative Religion from the Hebrew University in Jerusalem. With his master thesis titled “Common Pool Resource Management and Benefit Distribution in Community Based Tourism”, he speaks as a guest lecturer at universities and presents at academic conferences.

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Dr. Mihee Kang, Assurance Program Director & Asia-Pacific Program Director

Dr. Mihee Kang is the GSTC Director for the Asia Pacific region, as well as an authorized trainer and destination assessor. She has taught and researched ecotourism and sustainable tourism at several universities since receiving her Ph.D. degree in 1999 from Seoul National University. As the first Ph.D. in ecotourism in S. Korea and a UNESCO Man and Biosphere Reserve (MAB) Young Scientists Awards 2000 winner, she has been involved in sustainable tourism policy development and sustainability assessments of various types of destinations in S. Korea and other countries over 30 years. She has served in both domestic and international organizations such as Korean Geopark Committee, Korea Islands Foundation, Korea Trails and Culture, Jeju World Heritage Committee, Korea Forest Education Committee, Asian Ecotourism Network, etc. She has actively participated in numerous research projects and ODA projects in Korea and abroad. Dr. Kang has published many articles and books including a recent book about ecotourism in Asian countries.

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Estefanía del Azar, Communications Manager


Estefanía del Azar is the Communications Manager for GSTC, she has a solid background in advertisement and marketing. With an entrepreneurial mindset, she co-founded her own advertising agency after working for a decade with various agencies and media companies. Estefanía holds a Bachelor’s degree in Advertisement and PR from Antonio de Nebrija University, as well as an MBA and other management and leadership courses, such as Corporate Social Responsibility, Team and Talent Management, and Online Marketing. She is a passionate learner about technology, innovation, and sustainable travel. In addition to her professional work, Estefanía volunteers in her community by leading its book club. She is based in Madrid, Spain.

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Herdi Andrarilachi, Audit Process Analyst

Herdi Andrarilachi has been concerned towards sustainable tourism and certification bodies since 2015. He has gained valuable experience as a coordinator and supervisor for an international Destination Management Company (DMC) in Indonesia. His certifications reinforce Herdi’s commitment to sustainability in IRCA ISO 9001:2015, IRCA ISO 14001:2015, RSPO (Roundtable on Sustainable Palm Oil), ISPO (Indonesian Sustainable Palm Oil, and GSTC (Global Sustainable Tourism Council). This diverse set of credentials equips him with comprehensive knowledge and expertise in sustainability. Herdi holds a master’s degree from Chulalongkorn University in Thailand, majoring in Environment, Development, and Sustainability concerning Sustainable Tourism Destination Management. Herdi is currently based in Indonesia.

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Natalia Sanin, Measurement & Reporting Analyst

Natalia Sanin is the Measurement & Reporting Analyst for GSTC. She has seven years of experience in quality assurance, both in ISO 9001 and Fairmined (sustainable standard for small-scale and artisanal mining), as well as experience in process improvement and crowdfunding. She has a business administration degree, a certification in Integrated  Quality Management Systems (HSEQ), and is certified as an internal auditor.

Based on her experience and knowledge in quality assurance and auditing, she seeks to positively impact the lives of people in need, their communities, and the environment. She believes that sustainable standards are an excellent way to improve society and the world.

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Tiffany Chan, Destinations Coordinator

Tiffany’s focus is on sustainable tourism, particularly in destination stewardship, responsible recreation, and nature-based tourism. Her role at GSTC includes communications and Destination program support. Prior to joining GSTC, Tiffany held various positions in tourism, from business development and marketing to client services. She is a jury member for two international tourism film festivals and a volunteer at the Destination Stewardship Center. Tiffany holds a master’s degree in Sustainable Tourism Management from the Polytechnic Institute of Leiria in Portugal and an Honours Bachelor of Science degree in International Development Studies, Economics, and Psychology from the University of Toronto in Canada.

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Jisun Kim, Training Program Manager

Jisun Kim is the Training Program Manager at GSTC. She has received her BA in English Literature, MA in English Education, and a teacher certificate from Inha University. She is currently completing her PhD in Business Administration at Inha University, focusing on leadership, work values, self-efficacy and quality of Life and teaching a course on Peter Drucker’s Managing Oneself. She completed the Global MBA and Leadership certificate program that included intensive training in France (University of Le Havre Normandy), Germany (Otto von Guericke University Magdeburg), China (University of Xiamen) and Korea (Inha university). She worked as an intern for a marketing project for CJ Cheil Jedang and as a HR Coordinator for Dongsung Corporation, developing an integrated job profile that included job description, role and responsibility, competence and KPI.

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Emi Kaiwa, Manager, Asia Pacific

Emi Kaiwa specializes in tourism and hospitality, sustainable tourism, project management, membership engagement, corporate sustainability and fundraising, and is experienced in the regions of Europe, Africa, and Asia. Working with profit and non-profit organizations in different industries and countries have given Emi a varied skillset and the ability to multitask and handle multiple projects simultaneously. Prior to joining GSTC, Emi worked with the leading sustainability organizations, such as WWF (World Wild Fund for Nature) Japan, University of Cagliari, South Sardinia, and Pacific Asia Travel Association (PATA). Emi holds an MBA in Tourism from University in Thailand, with a concentration in sustainable tourism in Asia. She is currently based in Tokyo, Japan.

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Julieta Battilana, Events & Membership Coordinator

Julieta Battilana is a tourism specialist whose focus has been on the communication and planning of tourism and has a particular interest in regenerative tourism. She has held different positions in this sector, from product development to marketing specialist for a certification body, focusing primarily on the communication aspects of tourism. Julieta recently completed her MSc in Sustainable Development at the University of Sussex, which engages with interdisciplinary perspectives of today’s most pressing issues. She holds an Honours Bachelor of Arts degree in Tourism, Planning and Management from the University of Westminster in London. She is currently based in London, United Kingdom.

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Adriana Pizzi, Membership Coordinator

Adriana Pizzi is one of the Membership Coordinators at GSTC with over eight years of experience in the conservation of nature and sustainable tourism sector. Previously, Adriana worked as Communications Officer at Provita NGO in Caracas, where she contributed to environmental education and outreach projects. She later expanded her expertise by working as a Project Manager at Train & Travel with Women for Africa in Côte d’Ivoire, empowering women through community tourism. Adriana’s journey led her to become the Ecotourism Manager at Tacugama Chimpanzee Sanctuary in Sierra Leone, where she successfully oversaw ecotourism activities. Her profound dedication to protecting natural resources, improving livelihoods, and promoting a harmonious relationship with nature and diverse cultures drives her work at GSTC. With a Law degree from Universidad Católica Andrés Bello, Venezuela and a Master’s degree in Ecotourism from Edinburgh Napier University, Scotland, Adriana is committed to projects that have a positive impact in nature and people.

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Tatiana Agudelo Monguí, Membership Coordinator

Tatiana works alongside in the GSTC Membership department, where her primary focus lies in providing dedicated support and fostering collaboration among Public, Academia, and Civil society members. She is convinced that recognizing the significance of inclusive discussions and engagement among all tourism stakeholders is necessary to build the foundations of sustainable tourism.

Tatiana has a master’s degree from the Université Lumière Lyon II in ‘Planning, Development and Marketing of Tourism Territories’ and have formerly served in the France public tourism sector in the Normandy region. Prior to this, Tatiana held various positions around the world from hospitality to tourism product, observatory, and destination development. Driven by her lifelong passion for cultural immersion and learning through nature, Tatiana has witnessed the incredible transformative power of tourism in recognizing and strengthening the cultural and natural heritage and wants to firmly continue to contribute to this

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Ayako Ezaki, Online Training Manager

Ayako Ezaki is Co-Founder and Director of Training Strategies & Development at TrainingAid, an international tourism and training company offering training and skills development opportunities for tourism industry professionals. Having worked for more than a decade in tourism professional training and education, Ayako specializes in content building, educational program design, training facilitation and project planning. She also brings many years of experience in online communications and content marketing. Through TrainingAid’s partnership with the GSTC, Ayako serves as Training Director to develop, manage and market the GSTC Sustainable Tourism Training Program, and over the last few years has worked with hundreds of tourism industry professionals from around the world supporting sustainability practices for tourism businesses and destinations. In addition, Ayako serves as the Expert Coordinator for Tourism Declares Climate Emergency, a global network of tourism industry stakeholders coming together to make tourism more climate positive.

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Dr. Ioannis Pappas, Program Director – Mediterranean Region

Dr. Ioannis Pappas sits on the GSTC Board of Directors and acts as the Treasurer of GSTC. He is the GSTC Representative in the Mediterranean Region, and a GSTC authorized Trainer. Dr. Pappas is the CEO of Green Evolution SA, an experienced professional engineer, with over 25 years of work in several fields of science, focusing on sustainability and tourism, energy and environmental efficiency in infrastructure and buildings. He is also auditing and advising on standardization of companies and technological implementation of climate adaptation and mitigation methodologies. Dr. Pappas is Co-founder and a Board Member in a number of organizations (Sustainable Building Council of Greece, Hellenic Passive House Institute, Hellenic Start Up Association) as well as Co-founder of the Hellenic Ecotourism Society. He worked with the Joint Research Center-IE of European Commission and was a Greek representative as the expert for ITL at UNFCCC.

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Jorge Moller, Program Director – Latin America

Jorge Moller is a sustainable tourism expert with nearly 40 years of leadership and hands-on experience in Chile and throughout Latin America. Currently, Jorge is the Director of Regenera ONG,  which is a GSTC Training Partner that delivers training courses in Spanish online and in Latin America.  Through Regenera, Jorge builds bridges with indigenous communities to create authentic experiences for tourists by sharing their culture and beliefs while generating income to sustain their way of life. Jorge has been involved with the GSTC since 2013, when he participated in the GSTC Early Adopter Program in Chile. He aslso served on the GSTC Board of Directors for a number of years. Jorge was instrumental in the cofounding and development of the South American Sustainable Tourism Network (SAST Network). Also co-founder of LACEN (Latin American and Caribbean Ecotourism Network) and on the board of GEN (Global Ecotourism Network). He regularly shares his expertise as trainer, consultant and speaker, lecturing on tourism and sustainable development in events throughout the region. Jorge is especially passionate about his work with the Mapuche and other indigenous peoples in Chile.

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CB (Ram) Ramkumar, Program Director – South Asia

CB Ramkumar is a Member of the GSTC Board of Directors, Chair of the GSTC India Working Group, and was influential in the adoption in 2014 by the government of India of national sustainable tourism standards which drew heavily from the GSTC Criteria. Ram is an author, speaker, trainer, consultant, an entrepreneur and an expert in applied sustainability. He developed a model for sustainable living when he built the first 100% eco resort – Our Native Village in Bangalore, India. Over the last decade, he has extended his expertise to sustainable living – sustainable food, sustainable health, sustainable service, marketing & branding. Ram had been an advertising and marketing professional for two decades. His long career in the advertising & marketing took him to global companies like Saatchi & Saatchi, Ogilvy & Mather, Publicis and Standard Chartered Bank.

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Kathleen Pittman, Program Director – Caribbean, and Special Projects

Kathleen Pittman is a leading technical expert on the application of the GSTC Criteria by businesses and government, supporting specific partnerships, special projects, and as a Destination Assessor and a GSTC Trainer. Kathleen is an attorney and international practitioner at the intersection of tourism and sustainable development. Kathleen especially enjoys working with partners devising strategies to deepen community benefits from tourism, including building capacity and market access for local entrepreneurs and other suppliers. Kathleen previously served as an attorney for the U.S. Federal Trade Commission and the law firm O’Melveny & Myers LLP. Before law school, Kathleen helped the Center for International Private Enterprise advance private sector development in Latin America & the Caribbean.

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Jackie Denman, Associate Technical Director

Jackie studied maths and geography at Cambridge University and has been an Associate of The Tourism Company since its inception in 1991. Jackie has a long held and special interest in the interface between people, place and the environment and has specialised in sustainable tourism and tourism in rural and protected areas. She has worked on destination management plans and on product development strategy and evaluation. She has co-authored publications for the World Tourism Organisation (UNWTO), IUCN and the Secretariat for the Convention on Biological Diversity. In 2009, Jackie was awarded with distinction an MSc in Sustainable Development (Environmental Management) with Imperial College, London; she is an Environmental Partner of the Chartered Institute of Water and Environmental Management.

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Richard Denman, Associate Technical Director

Richard is Director of The Tourism Company, a small specialist tourism consultancy based on the UK. Following a degree in Economics from Cambridge University and a doctorate based on tourism research, Richard worked for ten years as development and marketing director for the tourist board in central England.  He has been a consultant since 1990 and has worked in over fifty countries. In 2005 he wrote the policy guide Making Tourism More Sustainable for UNEP and UNWTO, and has continued to work with them and a number of international agencies on sustainability issues, including the preparation of various good practice guides. Richard has worked at a local level with many destinations round the world and has a particular interest in tourism in protected areas.  In 2009/10 he undertook the initial work on developing the accreditation process for the predecessor body to the GSTC. Richard is a former Board Director of The International Ecotourism Society and serves on the Advisory Committee of the Travel Foundation.

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David Andrés Ortegón-Martínez, Associate Technical Director

david andres ortegon martinez 200x250David’s experience on sustainability include his work as Sustainability Corporate Director at Karisma Hotels & Resorts in México, Jamaica and Dominican Republic, the development of the SM@RT Manager program, created to integrate Project Management, International Quality Standards (The Leading Hotels of the World – AAA) Innovation and CSR under a Sustainable approach into the daily operation of Hotels & Accommodations, and the development of the Sustainable Tourism Model for the State of Guanajuato, México. David is General Director and Owner of KAI Sustainable Coaching, a company based in México and Dominican Republic, created to assist tourism businesses in Latin America and The Caribbean to integrate Sustainability into their Management Systems and use it as a key element to optimize the use of its resources and its competitiveness on the market. David holds a Master on Leadership & Environmental Management from the UCI Costa Rica and an International Master in Local/Rural Development from the Polytechnic University of Madrid.

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Dr. Soyoung Lee, Project Manager

Dr. Soyoung Lee has a passion for human behaviour against nature. Her master research on local community’s perception on protected areas and world heritage sites has led on to further research on qualitative assessments in development projects and sustainable management. With her Ph.D research on ‘Enhancing Interactive Innovation in the Rural Areas of Europe through Evaluation: Quantitative Network Analysis and Qualitative Self-Evaluation Tools’ she is interested in how stakeholders can bring in innovative solutions to their programs/projects through self-evaluation and qualitative assessments. At GSTC she is responsible for data inventory management, such as filing of successful case studies according to the GSTC criteria. She also supports other GSTC initiatives.

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Dr. Yoonjeong Jeong, Postdoctoral Fellow

Dr. Yoonjeong Jeong is a postdoctoral fellow at the Global Sustainable Tourism Council. She holds a Masters and PhD degree in Forest Environmental Science from Seoul National University. Her research focused on sustainable tourism and ecotourism. She has also conducted research on community-based tourism and tourism governance. Currently she is focusing on tourism big-data as well. She has actively participated in Korean government-funded research projects which are related to the aforementioned research areas. To date, she (co-)authored many refereed papers including the recent article about factors influencing community-based tourism in developing and developed countries.

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