Earlier in the last century, an Austrian economist and political scientist Josef Schumpeter defined innovation as creating "new or improved" goods, services, procedures, methods, processes, business models or markets. Schumpeters conceptualisation was applicable to technology and to management. The range of innovative activities therefore run the gamut from small incremental continuous improvements in our businesses, up to major radical or disruptive innovations. Schumpeter would tell us that by a process of "creative destruction", the old ways of doing things (which he terms the incumbency) would give way to the more relevant and valuable technigues, methods, markets, products and services (which he terms the innovating business). Schumpeter in his early writings opined that small businesses were the crucible for innovation. He subsequently moved to adopt a big business position as he opined that small businesses were resource constrained and hence would not be able to innovate to the same extent as larger businesses. However, in his later years he returned to the SME as the main driver of innovation.
Refer: Schumpeter J, 1934, "The Theory of Economic Development: An inquiry into profits, capital, credit, interest and the business cycle"