There are two main sources and types of technology. Internal research and development is one source, but it is usually slower and more costly. External sources include mergers and acquisitions, joint ventures, franchise agreements, licensing agreements, and formal/informal contracts. These allow firms to gain new technologies through partnerships and sharing of innovations, but also come with disadvantages like culture clashes or high contracting costs. The types of technology discussed are agriculture/bio, energy/power, construction, manufacturing, transportation, medical, and information/communication.