This step marks the summit of our intellectual journey toward understanding blockchain. While the previous 12 steps explored the individual concepts that make up blockchain in isolation, this step brings them together. As a result, we not only gain an understanding of blockchain as a whole but also see how the different concepts work together. This learning step starts with reviewing the major concepts and technologies of blockchain. It continues with an explanation of what blockchain is, based on the technical knowledge you gained in the previous 12 steps. Finally, this step provides a reviewed definition of the blockchain technology suite, thereby opening the blockchain to a wide range of applications.