This study analyzes how decentralization policies have affected service delivery and public perceptions in Laos' Sang Thong district. The results demonstrate increases in public service satisfaction, efficiency, and professionalism in municipal government. While 43.33% of respondents said they were more confident in local government services, the percentage of respondents who saw local officials as professionals rose from 21% in 2012 to 27.33% in 2020. In addition, 33% of respondents said their ideas were valued, up from 20% in 2012, and 47.67% thought local officials were efficient. Road infrastructure, healthcare, education, waste collection, and drinking water all saw improvements in public service satisfaction, with clean drinking water receiving a 20.33 percentage point boost. Even with these improvements, problems like bribery for quicker service and persistent discontent with some services still exist. Social media has emerged as a crucial forum for public opinion. In summary, even though decentralization has improved governance and service delivery, more work is required to resolve lingering inefficiencies and guarantee sustained gains in public trust and satisfaction.