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Select where your tests execute.
| Region | Code | Best for |
|---|
| US East (N. Virginia) | us-east-1 | North America |
| Asia (Mumbai) | ap-south-1 | Asia & Europe |
Shards
Sharding splits your test suite across multiple parallel workers, reducing total execution time.
Configure 1–50 shards per run. You can set a per-project default and override it for individual runs. Tests are automatically distributed across shards for balanced execution.
After each run, the Shard Analysis view shows distribution and performance metrics — useful for spotting imbalanced shards and optimizing split.
Notifications
Get notified when a test run completes or fails.
- Email — sent to configured recipients
- Slack — delivered to subscribed channels
Configure notification preferences from Settings > Notifications. 
