Amazon Business in the world of e-commerce B2B (business to business) is an absolute phenomenon. Their sales increased from $ 1 billion to $ 10 billion in just three years. Their success is so spectacular and the popularity so high that over 70% of business buyers use it to check products and prices. It is therefore understandable that a significant proportion of B2B companies are deciding to move their stores to the Amazon platform. Still, there are more and more companies that are choosing to build their own B2B platforms. The demand for this type of services is growing and market technologies are becoming more available. Why is this happening? What do tailored B2B markets offer?