Amazon CloudWatch Events endpoints and quotas - AWS General Reference

Amazon CloudWatch Events endpoints and quotas

The following are the service endpoints and service quotas for this service. To connect programmatically to an AWS service, you use an endpoint. In addition to the standard AWS endpoints, some AWS services offer FIPS endpoints in selected Regions. For more information, see AWS service endpoints. Service quotas, also referred to as limits, are the maximum number of service resources or operations for your AWS account. For more information, see AWS service quotas.

Service endpoints

Region Name Region Endpoint Protocol
US East (Ohio) us-east-2

events.us-east-2.amazonaws.com

events-fips.us-east-2.amazonaws.com

HTTPS

HTTPS

US East (N. Virginia) us-east-1

events.us-east-1.amazonaws.com

events-fips.us-east-1.amazonaws.com

HTTPS

HTTPS

US West (N. California) us-west-1

events.us-west-1.amazonaws.com

events-fips.us-west-1.amazonaws.com

HTTPS

HTTPS

US West (Oregon) us-west-2

events.us-west-2.amazonaws.com

events-fips.us-west-2.amazonaws.com

HTTPS

HTTPS

Africa (Cape Town) af-south-1 events.af-south-1.amazonaws.com HTTPS
Asia Pacific (Hong Kong) ap-east-1 events.ap-east-1.amazonaws.com HTTPS
Asia Pacific (Jakarta) ap-southeast-3 events.ap-southeast-3.amazonaws.com HTTPS
Asia Pacific (Mumbai) ap-south-1 events.ap-south-1.amazonaws.com HTTPS
Asia Pacific (Osaka) ap-northeast-3 events.ap-northeast-3.amazonaws.com HTTPS
Asia Pacific (Seoul) ap-northeast-2 events.ap-northeast-2.amazonaws.com HTTPS
Asia Pacific (Singapore) ap-southeast-1 events.ap-southeast-1.amazonaws.com HTTPS
Asia Pacific (Sydney) ap-southeast-2 events.ap-southeast-2.amazonaws.com HTTPS
Asia Pacific (Tokyo) ap-northeast-1 events.ap-northeast-1.amazonaws.com HTTPS
Canada (Central) ca-central-1 events.ca-central-1.amazonaws.com HTTPS
Europe (Frankfurt) eu-central-1 events.eu-central-1.amazonaws.com HTTPS
Europe (Ireland) eu-west-1 events.eu-west-1.amazonaws.com HTTPS
Europe (London) eu-west-2 events.eu-west-2.amazonaws.com HTTPS
Europe (Milan) eu-south-1 events.eu-south-1.amazonaws.com HTTPS
Europe (Paris) eu-west-3 events.eu-west-3.amazonaws.com HTTPS
Europe (Stockholm) eu-north-1 events.eu-north-1.amazonaws.com HTTPS
Middle East (Bahrain) me-south-1 events.me-south-1.amazonaws.com HTTPS
South America (São Paulo) sa-east-1 events.sa-east-1.amazonaws.com HTTPS
AWS GovCloud (US-East) us-gov-east-1

events.us-gov-east-1.amazonaws.com

events.us-gov-east-1.amazonaws.com

HTTPS

HTTPS

AWS GovCloud (US-West) us-gov-west-1

events.us-gov-west-1.amazonaws.com

events.us-gov-west-1.amazonaws.com

HTTPS

HTTPS

Service quotas

Name Default Adjustable Description
CreateEndpoint throttle limit in transactions per second Each supported Region: 5 per second No The maximum number of requests per second for CreateEndpoint API. Additional requests are throttled.
DeleteEndpoint throttle limit in transactions per second Each supported Region: 5 per second No The maximum number of requests per second for DeleteEndpoint API. Additional requests are throttled.
Endpoints Each supported Region: 100 Yes The maximum number of endpoints per account per Region.
Invocations throttle limit in transactions per second

us-east-1: 18,750

us-east-2: 4,500

us-west-1: 2,250

us-west-2: 18,750

af-south-1: 750

ap-northeast-1: 2,250

ap-northeast-3: 750

ap-southeast-1: 2,250

ap-southeast-2: 2,250

eu-central-1: 4,500

eu-south-1: 750

eu-west-1: 18,750

eu-west-2: 2,250

Each of the other supported Regions: 1,100

Yes An invocation is an event matching a rule and being sent on to the rules targets. After the limit is reached, the invocations are throttled; that is, they still happen but they are delayed.
Number of rules

af-south-1: 100

eu-south-1: 100

Each of the other supported Regions: 300

Yes Maximum number of rules an account can have per event bus
PutEvents throttle limit in transactions per second

us-east-1: 10,000

us-east-2: 2,400

us-west-1: 1,200

us-west-2: 10,000

af-south-1: 400

ap-northeast-1: 1,200

ap-northeast-3: 400

ap-southeast-1: 1,200

ap-southeast-2: 1,200

eu-central-1: 2,400

eu-south-1: 400

eu-west-1: 10,000

eu-west-2: 1,200

Each of the other supported Regions: 600

Yes Maximum number of requests per second for PutEvents API. Additional requests are throttled.
Targets per rule Each supported Region: 5 No Maximum number of targets that can be associated with a rule
Throttle limit in transactions per second Each supported Region: 50 Yes Maximum number of requests per second for all EventBridge API operations except PutEvents. Additional requests are throttled
UpdateEndpoint throttle limit in transactions per second Each supported Region: 5 per second No The maximum number of requests per second for UpdateEndpoint API. Additional requests are throttled.

For more information, see CloudWatch Events quotas in the Amazon CloudWatch Events User Guide.