How do you handle global infrastructure on AWS/GCP? The performance is great in the US for my Next.js app on GCP/AWS as that's where I deploy to, but elsewhere

How do you handle global infrastructure on AWS/GCP? The performance is great in the US for my Next.js app on GCP/AWS as that's where I deploy to, but elsewhere the TTFB is poor. Deploying to multiple regions would probably end up costing more than Vercel for us.