Cut to the Chase: In-House Outreach Team vs Hiring an Agency - The Real Costs and Staffing Playbook
https://www.scribd.com/document/983196773/When-Marketing-Leaders-Get-Burned-by-Link-Building-Vendors-Sam-s-Story-132324
3 Key Factors When Choosing Between an In-House Outreach Team and an Agency Stop treating this as a feelings decision