If you're thinking about starting a business, you likely already have an idea of what you want to sell, or at least the market you want to enter. Do a quick search for existing companies in your chosen industry. Learn what current brand leaders are doing and figure out how you can do it better. If you think your business can deliver something other companies don't (or deliver the same thing, but faster and cheaper), you've got a solid idea and are ready to create a business plan.
Public Sector Undertaking (PSU) – Alternatively known as Public Sector Enterprise (PSE). It may be public limited company listed on stock exchanges with major ownership by a state government or a central government of India or it may be unlisted entity with major ownership by a state government or a central government of India. Some of these entities are formed as business entities through special legislation, where these entities are governed by the statutes of these legislation and may or may not be governed by company laws like a typical business entity.