Health care is by definition an interdisciplinary field of activity, whose aim is to promote, recover and, above all, maintain the health of a population. To this end, the state should develop actions and provide resources, in accordance with article 196 of the 1988 Constitution. The Millennium Development Goals (SDGs) aim to improve people's quality of life by 2030. These include SDG 3 - Health and well-being and SDG 10 - Reducing inequalities. In order to achieve health and well-being, reducing inequalities in living conditions and access to services is fundamental. It is becoming increasingly important to analyze inequalities and their impact on living conditions or the determinants of health. The use of technology, especially information technology, can be a step forward in this regard, although it can also be a way of widening the gap between different regions. In Brazil, from 2023 onwards, there will be a new shape to the SUS, due to what happened during the period when the COVID pandemic was at its most acute; the consideration of access will have to be brought back into focus.