In today's world, Sustainable development is becoming a crucial part to meet the increasing demand of future generations. The 4th International Conference on Intelligent Sustainable Systems [ICISS 2021] is one of the initiatives toward attaining sustainable development and facilitating collaborative forums in international level. It provides unique opportunity to bring together academicians, researchers, scientists and research scholars to share and exchange ideas and practical solutions towards achievement of intelligent sustainable systems for a more sustainable future. This conference also aims to create an interdisciplinary platform to share their research ideas on developing new models and algorithms for sustainable development and provide intelligent paradigm shifts to deal with uncertainties and imprecise problems in real-world. ICISS 2021 is an annual international conference that aims to enhance the intersection of intelligent systems and sustainability. The Conference mainly aims to explore and share cutting-edge research knowledge for future sustainable collaboration. The research works that discusses the tools, methodologies, practices, and applications of sustainable systems and computational intelligence methodologies,
SCAD College of Engineering and Technology (SCADCET), an NBA Accredited Institution, approved by AICTE & affiliated to ANNA UNIVERSITY CHENNAI, It's an ISO certified institution and recognized by UGC under the section 12(B) & 2(f). SCAD CET is a premier engineering college located in a sprawling 300 acre campus at Cheranmahadevi, a quaint town in Tirunelveli District, Tamil Nadu. The college is managed and run by SCAD Educational Trust of the SCAD Group of Institutions and offers engineering courses in the undergraduate as well as postgraduate degree level. It also provides management and computer application courses at the postgraduate level. Students of Scad College of Engineering and technology are given the opportunity to pursue first-rate and advanced technical education regardless of background, gender or financial constraints. The necessity to promote most advantageous learning and service is well harmonized and clearly expressed by allowing students to successfully plan their education and competently achieve the education they need. Curricular and co-curricular programs form an integral part of the curriculum and help students to have commanding incorporation of theory and practical knowledge. Each individual is motivated to increase the gravity of responsibility and be committed to serve the nation.