There are several types of mergers and acquisitions, including horizontal, vertical, conglomerate, and concentric mergers. Horizontal mergers involve the combination of two companies that are in the same industry or line of business, while vertical mergers involve the combination of companies that operate in different stages of the same industry's value chain. Conglomerate mergers involve the combination of companies that are in completely different industries, and concentric mergers involve the combination of companies that have complementary products or services.   In addition to the types of mergers and acquisitions mentioned above, there are also two other types: asset sale and corporate sale. In an asset sale, one company sells some or all of its assets to another company, while in a corporate sale, one company sells all of its shares to another company, resulting in the acquiring company taking over the target company's operations.