The use of digital technologies has spread to areas other than industry and has given rise to new areas such as smart cities, smart health, and education 4.0. The milk production chain is also benefiting from these digital innovations, but due to their characteristics, in a gradual and focused way. The objective of this research is to verify the use of digital technologies through digital transformation to improve the dairy production chain in the last 14 years. The methodology consisted of a longitudinal survey between 2008 and 2022. In 2008, we analyzed the digital technologies used in 3 large Brazilian dairy farms. In 2022, we look at the digital technologies that the XPTO company offers to dairy farms. We were able to verify that the use of digital technologies through digital transformation improved the production of the dairy chain. We can highlight that the main advances were in the automation of production with intelligent sensors such as IOT and digital platforms for online data processing with the use of AI, the evolution of computer network technologies and farm management systems.