Digital infrastructure is an important term nowadays, especially when it comes to connecting the digital society and the economy. Digital infrastructure and connectivity are actually considered the foundation of digital society and economy, and the task of this paper is to define important terms for this topic and prove the importance of digital technology for connecting society and economy. Digitization is connected with Industry 4.0, also known as the fourth industrial revolution, which brought great changes in the world and the rapid development of digital technology, but also society and the economy in general. Nowadays, society and the economy, the simplicity of life, both private and business, and the use of public services, digital marketing, communication and other benefits of digital technology depend on its further development. The use of digital technology has its advantages, but also disadvantages. Of course, it also has a certain risk that it struggles with every day, and security is one of the main points of digital technology development. In addition, one of the main points is the adaptation of digital technology to society, especially to the elderly and people with disabilities who find it difficult to navigate using digital technology, and it is necessary for them to adapt to this new and necessary life. This is why work is being done on its development, and countries are setting their own long-term digital goals to support its development.