Cost
You are responsible for the cost of the AWS services used while running this solution. As of this revision, the cost for running this solution with the default settings in the US East (N. Virginia) Region is approximately $10.00/day per stack plus charges for API requests and data traffic relative to the size of the event.
Daily cost for maintaining the solution without any events
| AWS service | Requests/Time | Cost [USD] |
| Amazon API Gateway | 0 | $0.00 |
| Amazon CloudFront | 0 | $0.00 |
| Amazon CloudWatch | 0 | $0.00 |
| Amazon DynamoDB | 0 | $0.00 |
| Amazon ElastiCache | Compute node hours (Redis) | ~$6.00 |
| AWS Lambda | Free tier* | $0.00 |
| AWS Secrets Manager | Free tier* | $0.00 |
| Amazon Simple Storage Service (Amazon S3) | Free tier* | $0.00 |
| Amazon Virtual Private Cloud (Amazon VPC) | VPC endpoint hours NAT gateway hours |
~$5.00 |
| TOTAL: | ~$11.00 | |
*The cost estimate is based upon a clean environment. If you are using this AWS service outside of this solution, you might exceed the free tier quota.
The following tables show estimated costs for a 50,000-user and a 100,000-user waiting room with an event duration ranging 2-4 hours with 500 users/second incoming and 1,000 users/min outgoing. Prices are subject to change. For full details, refer to the pricing webpage for each AWS service used in this solution.
Estimated cost for 50,000 waiting room users during 2-hour event
| AWS service | Dimensions | Cost [USD] |
| Amazon API Gateway | Requests | $2.00 |
| CloudFront | Requests, Bandwidth | $75.00 |
| CloudWatch | Metrics, Alarms, Storage | $1.00 |
| Amazon CloudWatch Events | Events | $1.00 |
| DynamoDB | Read/Write units, Storage | $1.00 |
| ElastiCache | Node hours | $8.00 |
| Lambda | Requests, Compute time | $1.00 |
| AWS Secrets Manager | Secrets, Requests | $1.00 |
| Amazon S3 | Requests, Storage | $1.00 |
| Amazon VPC | Data transfer, Endpoint time | $2.00 |
| TOTAL | $94.00 | |
Estimated cost for 100,000 waiting room users during 2-hour event
| AWS service | Dimensions | Cost [USD] |
| Amazon API Gateway | Requests | $4.00 |
| CloudFront | Requests, Bandwidth | $296.00 |
| CloudWatch | Metrics, Alarms, Storage | $1.00 |
| CloudWatch Events | Events | $1.00 |
| DynamoDB | Read/Write units, Storage | $4.00 |
| ElastiCache | Node hours | $32.00 |
| Lambda | Requests, Compute time | $1.00 |
| AWS Secrets Manager | Secrets, Requests | $1.00 |
| Amazon Simple Queue Service (Amazon SQS) | Requests | $1.00 |
| Amazon S3 | Requests, Storage | $1.00 |
| Amazon VPC | Data transfer, Endpoint time | $6.00 |
| TOTAL | $348.00 | |
