Quotas and limits in IAM Identity Center
The following tables describe quotas within IAM Identity Center. Quota increase requests must come from a management or delegated administrator account. To increase a quota, see Requesting a quota increase.
Note
We recommend using the AWS CLI and APIs to administer IAM Identity Center if you have more than 50,000 users, 10,000 groups, or 500 permission sets. For more information about the CLI, see Integrating AWS CLI with IAM Identity Center. For more information about APIs, see Welcome to the IAM Identity Center API Reference.
Application quotas
| Resource | Default quota | Can be increased |
|---|---|---|
|
File size of service provider SAML certificates (in PEM format) |
2 KB | No |
|
SAML assertion limit |
50,000 characters | No |
File size limit of the IdP certificate uploaded to IAM Identity Center |
2500 (UTF-8) characters | No |
| Access scopes per application | 25 | No |
AWS account quotas
| Resource | Default quota | Can be increased |
|---|---|---|
| Number of permission sets allowed in IAM Identity Center | 2000 | Yes |
| Number of provisioned permission sets allowed per AWS account | 250 | Yes |
| Number of inline policies per permission set | 1 | No |
| Number of AWS managed and customer managed policies per permission set | 201 | No |
| Maximum size of inline policy per permission set | 32,768 bytes. Maximum size of non-whitespace characters in the inline policy per permission set is 10,240 bytes. |
No |
|
Number of IAM roles (permission sets) in the AWS account that can be updated at a time |
1 | No |
1AWS Identity and Access Management (IAM) sets a quota of 10 managed policies per role. To take advantage of this quota, request an increase to the IAM quota Managed policies attached to an IAM role in the Service Quotas console for each AWS account where you want to deploy the permission set.
Note
Manage AWS accounts with permission sets are provisioned in AWS accounts as IAM roles, or use existing IAM roles in AWS accounts, and therefore follow IAM quotas. For more information about quotas that are associated with IAM roles, see IAM and STS quotas.
Active Directory quotas
| Resource | Default quota | Can be increased |
|---|---|---|
|
Number of connected directories that you can have at a time |
1 | No |
IAM Identity Center identity store quotas
| Resource | Default quota | Can be increased |
|---|---|---|
| Number of users supported in IAM Identity Center | 100000 | Yes |
| Number of groups supported in IAM Identity Center | 100000 | No |
| Number of unique groups that can be used to evaluate the permissions for a user | 1000 | No |
IAM Identity Center throttle limits
| Resource | Default quota |
|---|---|
| IAM Identity Center APIs | IAM Identity Center APIs have a collective throttle maximum of 20 transactions per second (TPS). The CreateAccountAssignment has a maximum rate of 10 outstanding async calls. You can open a support case to request an increase. |
| Identity Store APIs | Identity Store APIs have a collective throttle maximum of 20 transactions per second (TPS). You can open a support case to request an increase. |
| SCIM APIs | SCIM APIs have a collective throttle maximum of 20 transactions per second (TPS). You can open a support case to request an increase. |
Additional quotas
| Resource | Default quota | Can be increased |
|---|---|---|
|
Total number of AWS accounts or applications that can be configured * |
3000 | Yes |
|
Total number of instances of IAM Identity Center per account |
1 | No |
|
Total number of trusted token issuers |
10 | No |
* Up to 3000 AWS accounts or applications (total combined) are supported. For example, you might configure 2750 accounts and 250 applications, resulting in a total of 3000 accounts and applications.
