## Pricing and Quotas

- [### Pricing
  App Engine pricing, resource billing rates, and budgeting.](https://cloud.google.com/appengine/pricing)
- [### Quotas
  App Engine quotas and safety limits.](https://docs.cloud.google.com/appengine/docs/flexible/quotas)
- [### Manage costs
  Defines mechanisms that you can use to limit the costs of your App Engine
  app.](https://docs.cloud.google.com/appengine/docs/flexible/managing-costs)

## Other resources

- [### Locations
  For App Engine, the infrastructure that runs your apps is
  located in a specific region that Google manages.](https://docs.cloud.google.com/appengine/docs/flexible/locations)
- [### Feature deprecations
  The terms of service (section 7) define the deprecation policy that applies
  to App Engine.](https://docs.cloud.google.com/appengine/docs/flexible/deprecations)
- [### App Engine Service Level Agreement (SLA)
  Defines the terms of the SLA for App Engine.](https://docs.cloud.google.com/appengine/sla)
- [### SLA error rates
  Defines the App Engine error rates.](https://cloud.google.com/appengine/sla-error-rate)

## Release Notes

- [### Go release notes
  Release notes for Go on the App Engine flexible environment.](https://docs.cloud.google.com/appengine/docs/flexible/go/release-notes)
- [### Java release notes
  Release notes for Java on the App Engine flexible environment.](https://docs.cloud.google.com/appengine/docs/flexible/java/release-notes)
- [### .NET release notes
  Release notes for .NET on the App Engine flexible environment.](https://docs.cloud.google.com/appengine/docs/flexible/dotnet/release-notes)
- [### Node.js release notes
  Release notes for Node.js on the App Engine flexible environment.](https://docs.cloud.google.com/appengine/docs/flexible/nodejs/release-notes)
- [### PHP release notes
  Release notes for PHP on the App Engine flexible environment.](https://docs.cloud.google.com/appengine/docs/flexible/php/release-notes)
- [### Python release notes
  Release notes for Python on the App Engine flexible environment.](https://docs.cloud.google.com/appengine/docs/flexible/python/release-notes)
- [### Ruby release notes
  Release notes for Ruby on the App Engine flexible environment.](https://docs.cloud.google.com/appengine/docs/flexible/ruby/release-notes)
- [### Custom Runtime release notes
  Release notes for Custom Runtimes on the App Engine flexible environment.](https://docs.cloud.google.com/appengine/docs/flexible/custom-runtimes/release-notes)