An Outsourced CMO is, as Hawke Media founder Erik Huberman puts it, an entity which "mimics hiring in-house with the benefits of agency Cross-Learnings."

When the topic came up in my Conversation Studio, Huberman said of this,

"We almost force [clients] to know what we're doing so they understand the value we're creating because every month they're writing a check and asking 'what am I paying for?' It doesn't work the same with employees, [the business owner] doesn't feel like they need to justify their existence on a monthly basis."

References

Outsourcing for CMO with Erik Huberman, soundcloud.com