What was the contribution that Louis Armstrong made on jazz?

Louis Armstrong, also known as Satchmo, was a pioneering jazz musician who revolutionized the genre with his innovative Trumpet playing and distinctive singing style. He was a key figure in the development of jazz as a soloist, influencing countless musicians with his improvisational skills and charismatic stage presence. Armstrong's contributions to jazz include popularizing scat singing, expanding the role of the soloist in jazz ensembles, and helping to establish jazz as a major art form in the 20th century.