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  • We want to thank Simon for the co-operation and the professionalism in Social Media Coaching all these years.

    Spyros Papadatos
    Regional Marketing Manager | Dell
  • Excellent instructor with perfect business acumen. Trust him!

    George Papandreopoulos
    Capella - MCN (IPG Network)
  • Simos is a well organised trainer and makes communication in digital era an easy to do task. His skills are deriving from years of experience in the communication field and his ability to transform his knowledge to practical examples. His training on social media was really helpful for me and my work.

    Efi Kontouli Marketing Manager | iSquare SA (Apple Reseller)
    Efi Kontouli Marketing Manager | iSquare SA (Apple Reseller)
  • I have had four exciting hours with Simon Koss showing me in detail all these great tools that can help you to target your audience through facebook ads and google adwords and i have understood two things: the first one is that Simon is a real digital marketing magician, so good that he can show you the most complicated things with the most simple way. The second thing i have learnt is that each product manager should find the time, each day, to plan his digital marketing targeting with as much detail as he can. No tool can be used right if you don’t put inside your own wisdom about you consumer’s behaviour.

    Aris Pilitsopoulos
    Athens Medical Group
  • I’ve had the pleasure of attending the Social Media & Internet Marketing Master PRO. I have attended some seminars in my 20-year career as marketing and communications professional and I must say that Simos is perhaps the best instructor, teacher and strategic thinker. He is passionate about social media and he is well informed of new and emerging communications tools and strategies. I would highly recommend him to anyone interested in learning more about online communications.

    Virginia Apelatou
    Virginia Apelatou
    Marketing & Communications Manager | QlikView
  • We cooperated effectively for the social strategy development of a brand station in food industry sector.

    Christos Prapidis
    Marketing Manager | Delivery Hero
  • I have attended Social Media seminars that helped me to understand the opportunities that social media can create in the development of a company.

    Yota Thomou
    Head of Direct Advertising | Primemedia
  • Social Media seminars helped me to develop our social media strategy on Facebook so as to launch effectively our new mobile devices campaign.

    Aggeliki Mastori
    Marketing Excecutive | Crypto Technology
  • The seminars I attended in Leader School were very useful. I learnt a lot of smart tricks for today's digital marketing word. The instructors were so well informed on their subjects taught and my total impression is that professionality is the main characteristic of Leader School. I would definately suggest the Digital Marketing Seminars.

    Maria Tsagalis
    Marketing Manager | HATS (Hellenic Air Training Services)
  • I have had the distinct pleasure of attending Leader School’s “Digital Marketing Master Business Training Program” conducted by Simos Kosmetatos. Simos has been more than the ideal instructor. His exceptional and up-to-date knowledge of Social Media & Internet Marketing, as well as his ability to spread it, has been very helpful and useful for my professional and personal development. Based on his extraordinary knowledge, skills and ability to teach effectively, there’s no doubt he is an outstanding educator that I would highly recommend.

    Iro Akrioti
    Retail Marketing Executive | iStorm
  • We attended SEO & Online advertising business seminars that resulted in better ranking in Google search engine organic results and better ROI in our advertising on Google Adwords reducing our overall cost.

    Mina Iliovits
    Marketing Εxecutive | MidEast Travel
  • We cooperated effectively to create a new online web property around technology and unique online content that was highly appreciated from the online advertising market.

    Nektarios Sartzetakis
    CEO | Nemo Online
  • We have a valuable cooperation building brand awareness for social media customers.

    Andreas Vouros
    General Manager | Bakers Digital Communication
  • We cooperated with Leader Online School to develop the social media strategy of different brands in the food & retail industry.

    Ilias Pantelopoulos
    Digital Strategist & Entrepreneur
  • An excellent cooperation that resulted in valuable content creation for different brands in multiple social media platforms. Leader Online School is an important source of new ideas and tools to build your digital marketing strategy. The consulting services gave us new tools and opportunities to reach our target.

    Maria Kofou
    Social Media Strategist
  • We have a creative cooperation, Simos is a valuable Social Media Coach. Following the coaching sessions, I developed the online strategy of different clients in the health and retail market.

    Koni Karabetsou
    Social Media Expert
  • Leader Online School’s Internet Consulting services helped our company to develop our online presence building new online sales channels for our products.

    Vasilis Papadopoulos
    Entrepreneur/ Merchant/ Victoria Athens
  • Following the tools and strategy of the “Social Media Marketing” seminar, I managed to create an effective online strategy and promote my newly created company.

    Sofia Kabanidou
    Managing Director | Fantastick
  • I have attended Social Media & Internet Marketing Master PRO seminar. The 15 modules of the seminar were excellent and targeted to online success. Mr. Simon Koss, my coach, is an online marketing insider, great professional and always available to you whenever you need him. He helped me create a competitive online presence and, the most important achieve sales and growth. I am really pleased of the seminars and i would highly recommend him to any entrepreneur.

    Georgia Giannopoulou
    Entrepreneur | Health Industry
  • I attended Social Media Marketing seminars so as to better understand the strategy I need to follow and the tools I should use to increase sales in my eshop in the beauty sector.

    Vasiliki Papadopoulou
    CEO | MakeUpHouse
  • Excellent cooperation using the Internet Consulting services to understand the internet strategy I should follow as a dentist.

    Panos Mitropoulos
    DDS,MSc Dentist Surgeon
  • I attended seminars in Social Media, it was great because we had a lot of examples of how to use the tools for my online presence. I am pleased about my cooperation with Simon Koss who helped me to understand how we can use social media in our everyday business life.

    Efi Vraka