This document discusses marketing strategies for professional services. It defines professional services as occupations requiring specialized training and often professional degrees or licenses in fields like law, engineering, healthcare, and education. The core of professional services marketing is retaining existing clients and attracting new ones by understanding their needs and delivering appropriate services consistently with professional standards of accountability, confidentiality, honesty, and integrity. The document outlines strategies for marketing to new versus existing clients, including advertising, social media, public speaking, and referrals. Both offline and online techniques are discussed.