It indicates creation and creativity in all forms. It is the seed sound for success in spiritual, educational, and scientific endeavors. It is also the seed sound for all kinds of artistic and creative actions such as writing, visual arts, singing, dance and music.
Since all of life is a form of "creation", it is essential to obtain Saraswati's grace, so our actions are wise and timed appropriately. Because of this key attribute, she is one of the energy forms invoked at the onset of any venture (after Ganesh) and is part of the important tri-Goddess energy form of Mahalaxmi.