“The Big 4D: Open, Change, Adjust and Embrace the Modern Era of Marketing” Photographs Compilation of the 15th Southern Marketing Day by the Marketing Association of Thailand together with Hatyai University, Dr. Tharnpas Sattayarak delivered warmly welcome speech to participants. Thereafter, M.R. Sudhipanee Yukol, the executive director of Marketing Association of Thailand, presided over the event and delivered a speech during the opening ceremony. In the morning of the event,Khun Bangorn Suwanmongkol, the founder of Hummingbirds Consulting, was a guest speaker of “Big Data and Digital Consumer”. Also, Khun Nuttaputch Wongreanthong, a digital marketing trainer and consultant, was a guest speaker of “Big Move and Digital Marketing”. Subsequently, Khun Thannithi Apichaichotrat, the co-founder of Small World For Kids Co., Ltd. and who was the one of the Thai CEOs selected to be an Alpha Tester by Facebook, was a guest speaker on “Big Content and Digital Platforms: Deliver the Right Message through the Right Platform”.Khun Anurak Sanruethai, also known as Bang Hasan, the owner of Hasan Dried Seafood Co., Ltd. in Satun and Hasun Dried Seafood Facebook Page, was a guest speaker on “Big Experience and Digital Disruption: the Beginning and the Turning Point of How to Grow a Business on Facebook Live”.The event was held on Friday, 7 February 2020 at Blue Ocean Hall, Hatyai Business School Building.