How do you scale your software development team without slowing down product development?

For SaaS businesses, finding the right software development talent can become a bottleneck when the product roadmap starts growing.

How do you usually handle this when you need additional developers quickly?

Do you prefer:

Hiring developers in-house
Working with freelancers
Hiring a dedicated software development team
Outsourcing specific development projects
Augmenting your existing engineering team

I'm particularly interested in experiences with dedicated development teams for long-term SaaS projects. What factors do you consider when evaluating a team—technical expertise, communication, scalability, timezone compatibility, cost, or something else?