 Strong connectivity augmentation

Strong connectivity augmentation is a concept in graph theory, particularly in the context of directed graphs (digraphs). It refers to a process aimed at enhancing the connectivity of a directed graph to ensure that there is a directed path between every pair of vertices, thereby making the graph strongly connected. A directed graph is said to be **strongly connected** if there is a directed path from any vertex \( u \) to any other vertex \( v \).