To write concise yet informative answers in UPSC, candidates should focus on clarity and coherence. Structuring responses with an introduction, body, and conclusion aids in effective communication of ideas. Using bullet points for lists and definitions can enhance readability while ensuring brevity. Additionally, incorporating relevant examples and data strengthens arguments without unnecessary elaboration. Being mindful of word limits encourages aspirants to express thoughts clearly and succinctly. Finally, practicing writing under timed conditions helps develop the skill of delivering insightful content within the constraints of the examination.