The sales process is everything that you do to close the sale and get a signed agreement or contract. The sales process consists of interpersonal interaction. It is often done by a one-on-one meeting, cold calls, and networking. It's anything that engages you with the prospect or customer on a personal level rather than at a distance.
Both are necessities to the success of a business. You cannot do without either process. By strategically combining both efforts you will experience a successful amount of business growth. However, by the same token, if the efforts are unbalanced, it can detour your growth.