Having affliate programme doesn't stop being in affliate networks. While the two may have some similarities, there are different things that separate the ways the two works. Both business owners and even individuals that want to make money can be in the two programmes at the same time.
Affliate networks would connect the individuals with both publishers and advertisers in order to make money while affliate marketing will only give you the leverage of promoting other people's business.
Affliate networks would connect the individuals with both publishers and advertisers in order to make money while affliate marketing will only give you the leverage of promoting other people's business.