Civil service exam in India
Civil service exam in India is a competitive exam, which comprises of two successive stages:- 1. Civil Service Preliminary Examination (Objective Type), there after...

The IAS (Indian Administrative Service) was formally constituted in the year 1947, and is the premier service in India with respectful position. It offers an attractive and challenging career in India with full power & authority. Fame and glamour are also associated with this service. Even though most people tend to think being the DM or Collector is the most powerful and glamorous post, The IAS holds power at all levels. It is the service that is meant to place people straight at the top of any government body or organization and not the district alone. In spite of all the political interference if you are a determined person and diplomatic you can achieve anything for your country.
The IAS or the Indian Administrative Service handles affairs of the government. At the central level, this involves the framing and implementation of policy. At the district level, it is concerned with district affairs, including development functions. At the divisional level, the IAS officers look after law and order, general administration and development work. Members of the Indian Administrative Service hold various administrative posts like District Collector, Heads of Departments, and Heads of Public Enterprises at the state level etc. They can also be posted on deputation to the Central Government to various posts.
Being an ‘All India Service’, it follows the Cadre system. In this system officers are allotted to various state cadres and your service is allotted to that state. So for all practical purposes you belong to that state service and may be deputed elsewhere but you’ll always be recognized by your parent cadre. These systems though very useful tend to positively and negatively affect careers. The cadre system is allotted on a basis of lottery and the toppers of each state may get a chance to get their home states if they have opted for such a preference.