The concept of reservation significantly influences UPSC exam candidates by providing certain quotas for specific groups, including SC/ST and OBC candidates. This system aims to promote social equity and ensure that underrepresented communities have a fair chance at public sector jobs. While reservation can help level the playing field, it also raises debates about meritocracy in civil services. Candidates may experience both advantages, such as reduced competition, and challenges, like an increased expectation to perform exceptionally within their category. Overall, reservation policies shape the competitive landscape for UPSC aspirants.