I. IntroductionAccording to ACLEDA Bank's 2012 annual report, "Cambodia's financial market with its liberal regulatory environment is highly competitive with more than 35 commercial and specialized banks". Among commercial and specialized banks, ACLEDA Bank has managed to maintain its position as a market leader in terms of assets, loans, deposits and profitability, as well as in the number of offices and ATMs across the country. Furthermore, 'ACLEDA Bank Plc. The network had 238 offices covering all provinces and cities of the Kingdom of Cambodia. Based on this data, ACLEDA Bank appears to be in a very competitive position. Furthermore, in a country where the financial infrastructure is less developed, ACLEDA Bank is able to benefit because it has dominant market power. According to ACLEDA Bank's 2012 annual report, one of ACLEDA Bank's strategies for 2013/2014 is to 'increase investment in MIS and IT systems and develop and introduce electronic banking services, thereby launching internet banking.'Therefore I will examine whether it is desirable to launch an internet banking service considering the weight of ACLEDA Bank in the whole banking sector of Cambodia and the financial environment of Cambodia. First I will look at the advantages and disadvantages of internet banking, then I will use cost and benefit analysis and the SWOT analysis to draw a conclusion.II.Advantages and disadvantages of internet bankingInternet banking has become a standard of monetary transactions in the last ten years Internet banking becomes popular due to the easy and fast way of checking the account of customers However, in addition to the conveniences of internet banking, there are some drawbacksA. Advantages of Internet BankingThere is a... half of paper-based services, which means that these banks can pose a threat to ACLEDA bank, as competition increases. .V. Conclusion. Although the initial investment cost will be huge, ACLEDA Bank, as the leading bank in Cambodia, should launch Internet banking as soon as possible to take advantage of being the first Cambodian bank to establish Internet banking. Initially the costs of internet banking will be greater than the benefits, but in the long run; costs will be reduced and will bring greater benefits to the ACLEDA bank. Internet banking will attract many Cambodian customers, and as a result, ACLEDA Bank will be able to maintain its position as a market leader in Cambodia. However, ACLEDA Bank should not be satisfied with its current position as a market leader in Cambodia, but should continue to strive and achieve another goal: to be known globally..