The Port Authority of Thailand (PAT) is a public utility state enterprise under the general supervision of the Ministry of Transport with an objective to conduct the business pertaining to the port for the interest of the state and public. The main duties of the PAT are providing services and facilities to vessels and cargoes, conducting dredging and maintenance of the bar channels and basins, handling, moving, storing and delivering of cargoes to the consignee, coordinating and cooperating with the government agencies concerned and international ports, developing its organization to cope with the economic situation, and participating in corporate social responsibility. As the PAT is a government organization, its operations are carried out for the benefit of the country and its people. For almost seven decades of business, the PAT has always given high priority to all stakeholders especially the communities it operates in to ensure favorable reputation and relationships. Because the success of the PAT to date - as well its success in the future - is due to the effort and hard work of its devoted staff, the organization also places great value on their happiness, and works hard to promote teamwork and healthy relationships. In terms of ASEAN connectivity, it is obvious that Thailand has efficiency of infrastructure due to the form of well-connected road and highway network across the country. Moreover, the framework for Greater Mekong Sub-region Cooperation which encourages the development of basic infrastructures including transportation, telecommunication and energy, is one of the factors that boosts the PAT to becoming a Sub-regional Gateway. The Economic Corridors linking Thailand, Myanmar, Laos, Cambodia, Viet Nam and Southern China will support trade and economic activities within this sub-region and also ASEAN. Today, the Eastern Economic Corridor Development Project (EEC) has risen as a new large-scale investment, which sets its sights on new and unprecedented levels of development under the “Thailand 4.0” initiative. The development of various infrastructures will generate numerous opportunities in the surrounding areas such as encouraging industries, job creation and boosting local economies. The development of Laem Chabang Port Phase III is also one of the crucial mechanisms in supporting the scheme.