This paper explores the relationship between supergravity solutions and large N limits of field theories with sixteen supercharges. It considers various D-brane configurations in string theory and their corresponding supergravity solutions, showing how these solutions describe different regions of the field theories. The study focuses on the behavior of these systems in the large N limit, where the brane worldvolume theory decouples from gravity. The supergravity solutions are shown to be valid in certain regions where the curvature and string coupling are small. The paper discusses different D-brane configurations, including D2, D1, D0, D4, D5, and D6 branes, and their corresponding supergravity solutions. It also examines the behavior of these systems at finite temperature and the transition between different energy scales. The results show that for certain D-brane configurations, the supergravity solutions can be trusted in specific regions of the field theories, while for others, dual descriptions are needed. The paper concludes that the large N limit of these field theories is closely related to certain supergravity solutions, and that the behavior of these systems can be understood through the interplay between supergravity and super-Yang-Mills theories.This paper explores the relationship between supergravity solutions and large N limits of field theories with sixteen supercharges. It considers various D-brane configurations in string theory and their corresponding supergravity solutions, showing how these solutions describe different regions of the field theories. The study focuses on the behavior of these systems in the large N limit, where the brane worldvolume theory decouples from gravity. The supergravity solutions are shown to be valid in certain regions where the curvature and string coupling are small. The paper discusses different D-brane configurations, including D2, D1, D0, D4, D5, and D6 branes, and their corresponding supergravity solutions. It also examines the behavior of these systems at finite temperature and the transition between different energy scales. The results show that for certain D-brane configurations, the supergravity solutions can be trusted in specific regions of the field theories, while for others, dual descriptions are needed. The paper concludes that the large N limit of these field theories is closely related to certain supergravity solutions, and that the behavior of these systems can be understood through the interplay between supergravity and super-Yang-Mills theories.