Side-by-side trust signals. Pick the right column for your next integration.
| Signal | AWS AppStream API | AWS AppSync API |
|---|---|---|
| Category | Cloud Infrastructure | Cloud Infrastructure |
| Pricing | Paid | Paid |
| Auth | API Key | API Key |
| CORS | Yes | Yes |
| Rate limit | Unknown | Unknown |
| Response time | 280ms | 278ms |
| 30d uptime | 100% | 100% |
| Trust score | 97 (A) | 97 (A) |
| HTTPS | Yes | Yes |
Bottom line: both APIs are evenly matched on the measured signals — pick based on your specific use case.
Signals update continuously via automated health checks and verification runs. Data as of Oct 20, 2026.