The livestock sector has to satisfy the growing demand for animal products while reducing its environmental impact, in face of great climatic and market changes. For this reason, there is a necessity to redesign livestock production systems in order to make them more sustainable and adaptable. IFS (crop-livestock-trees) could be a viable option to achieve the above mentioned global goals. Moreover, the implementation of conservation agriculture practices proved to improve crop-livestock beneficial effects. This review paper aims at highlighting the scientific knowledge existing regarding the advantages and limitations of crop-livestock systems including agroforestry and conservation agriculture practices. This shows that integration can be a positive approach to achieve farm’s sustainability.