One may use dedicated developers and freelancers interchangeably but they are different. When you hire dedicated developers, you get direct access to
Access cross-functional team
Scalable IT infrastructure
For large-scale projects
Complete team control
Quick turnaround time
Reliable support
Agile methodology
Cost-effectiveness
Whereas freelance developers work for a fixed number of hours for your project. They may or may not have the desired IT resources and are under no contract with the client. There is always a commitment risk in working with freelancers.