Welcome to the official website of 4^th International Multi-Topic Conference on Engineering and Science (IMCES'2021). This conference will be held on 29-30 June 2020 in Universitas YARSI, Jakarta, Indonesia. IMCES is the premier forum for the presentation of advancement in engineering, science and technology and research results. The conference mission is to provide a platform for faculty, researchers, and designers from academia and industry to present their views, share their experiences, intellectual ideas and challenges in the field of engineering, science and technology and related fields. IMCES technical program will consist of plenary and keynote lectures in which the leading experts will present state-of-the-art reviews of rapidly-developing technology in addition to the latest significant findings and developments in all related fields. The event is expected to bring together more than 500 academicians, researchers, managers, designers, practitioners, and users who both advocate and adopt distinctively participatory approaches in the development of systems, services, and technology. Gyancity Research Lab organize 3 conferences (ICGCET.ORG, RTCSE.ORG, IMCES.TECH) across the globe. ICGCET^® was organized in Dubai, Denmark, Ireland, Denmark and Morocco in 2015, 2016, 2017, 2018 and 2019 respectively. ICGCET^®'20 and ICGCET^®'21 will in Russia and Peru. RTCSE^®'16 and RTCSE^®'17 conference were in Malaysia. RTCSE^®'18 was in Thailand. RTCSE^®'19 and RTCSE^®'20 was in USA. RTCSE^®'21 and RTCSE^®'22 will in the USA. IMCES^®'17, IMCES^®'19 and IMCES^®'20 was in Malaysia, Mauritius and Indonesia respectively. IMCES^®'21 and IMCES^®'22 will in Indonesia and Malaysia respectively. All accepted and presented papers of RTCSE^®, IMCES^® and ICGCET^® publish in Scopus/Thomson Reuters/Springer/Crossref index Journal.