Advaion, LLC | 1,150 followers on LinkedIn. Accounting, Management and Technology Advisors | Advaion is an independent advisory firm with over a decade helping clients manage their fast paced growth, prepare for an IPO, and maintain SOX compliance. Our firm is comprised of former "Big 4"​ business professionals with national and international experience guaranteeing that each of our clients works with a knowledgeable consultant. We serve our clients nationally through our primary offices in New York City and South Florida.