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App Engine is regional, which means the infrastructure that runs your apps is located in a specific region, and Google manages it so that it is available redundantly across all of the zones within that region.
Meeting your latency, availability, or durability requirements are primary factors for selecting the region where your apps are run. You can generally select the region nearest to your app's users, but you should consider the locations where App Engine is available as well as the locations of the other Google Cloud products and services that your app uses. Using services across multiple locations can affect your app's latency as well as its pricing.
You cannot change an app's region after you set it.
Note: Two locations, which are calledeurope-west and us-central in App Engine commands and in the Google Cloud console, are called europe-west1 and us-central1, respectively, elsewhere in Google documentation.
If you already created an App Engine application, you can view its region by doing one of the following:
Run the gcloud app describe command.
Open the App Engine Dashboard in the Google Cloud console. The region appears near the top of the page.
To select a region, you create an App Engine application in your Google Cloud project. See Manage projects, applications, and billing for details in your language for either the standard or flexible environment.
Cloud Storage locationWhen you create an app, App Engine creates a default bucket in Cloud Storage. Generally, the location of this bucket is the region matching the location of your App Engine app.
The following App Engine app locations create buckets that are multi-region:
us-central create a bucket in the US multi-region.europe-west create a bucket in the EU multi-region.To learn more about Cloud Storage bucket locations, see Bucket locations.
Firestore locationWhen you create an app, App Engine creates a default database in Firestore. Generally, the location of this database is the region matching the location of your App Engine app.
The following App Engine app locations create databases that are multi-region:
us-central create a database in the nam5 multi-region.europe-west create a database in the eur3 multi-region.To learn more about Firestore bucket locations, see Database locations.
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2025-08-07 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["App Engine is regional, meaning your app's infrastructure is located in a specific geographic region managed by Google for redundancy across all zones within that region."],["Selecting the right region for your app is crucial, based on your latency, availability, and durability needs, ideally choosing a region close to your users while considering the locations of other integrated Google Cloud services."],["Once an app's region is set, it cannot be changed, emphasizing the importance of choosing correctly from the start."],["When you create an App Engine application, it also creates a default Cloud Storage bucket and Firestore database, and generally, these services will be in the same region as your app."],["Special regions such as `us-central` and `europe-west` on App Engine create multi-regional buckets in `US` and `EU` respectively, and multi-region databases in `nam5` and `eur3`, respectively."]]],[]]
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