Complementary goods are a concept in economics that is often overlooked but is crucial to understanding consumer behaviour and market dynamics. These goods are closely linked and complement each other in use. When a product or service increases the value or attractiveness of another product, we speak of complementary goods.

Computers and software are a classic example of complementary goods. A computer is useful on its own, but it only becomes truly functional and attractive when software applications such as operating systems, office programmes or games are installed. In this case, hardware and software complement each other, and consumers often decide which computer to buy based on this complement.

Another example is cars and fuel. A car alone has limited use, but when it is supplied with fuel, it becomes really useful. Here we see the dependency between the car and fuel as complementary goods. Changes in the price or availability of fuel can influence the demand for cars and vice versa.

The importance of complementary goods is also reflected in the marketing strategy. Companies that offer products or services that function as complementary goods can utilise synergies to increase demand for their products. For example, smartphone manufacturers often offer apps and services that harmonise perfectly with their devices to improve the overall experience for customers.

It is important to note that changes in the prices or availability of complementary goods can have a significant impact on demand for the main product. Companies must therefore carefully analyse the interactions between complementary goods and incorporate them into their business strategies.

Overall, complementary goods are an important aspect of the economy that influences consumer decision-making and business strategies. A deep understanding of this concept is crucial in order to increase success in the markets and optimally fulfil the needs of customers.