Services
(1) Except as the Constitution expressly provides otherwise, defence/civil/all-India service members and civil post-holders under the Union hold office "during the pleasure of the President"; State civil service members/post-holders hold office "during the pleasure of the Governor". (2) Despite this "pleasure" doctrine, a special-qualifications contract appointee (not in the regular services) may still be promised compensation if their post is abolished or they're required to vacate it for reasons unrelated to misconduct.
This establishes the "doctrine of pleasure" - in principle, most government servants hold their positions at the President's or Governor's discretion, not as an absolute permanent right - though this is significantly limited in practice by Article 311's due-process protections and by service rules, so it doesn't mean arbitrary dismissal at will.
This "pleasure" doctrine sounds sweeping, but Article 311 immediately following it provides crucial due-process protections - meaning a government employee cannot actually be dismissed on a whim despite this formal "pleasure" language; a proper inquiry process is generally still required.