Merger and acquisition are transaction in which the ownership of company,business and organisation or thier utilise units are transferred or combined.As an aspect of strategic management, M&A can allow enterprises to grow, shrink, and change the nature of their business or competitive position.

From a legal point of view,a merger is a legal consolidaton of two entities into one entity. In a simple acquisition the acquiring of company obtains the majority stake in the acquired firm which does not change name or legal structure.Acquisitions are divided into public or private acquistion depending on whether the acquiree or mergng company is or is not listed on a public stock market.