This topic lists the limitations of RAM, such as the maximum number of users and the maximum number of user groups.
| Item | Limit |
|---|---|
| Maximum number of users | 1,000 |
| Maximum number of user groups | 50 |
| Maximum number of groups that a user can join | 5 |
| Maximum number of AccessKeys (AKs) that a user can create | 2 |
| Maximum number of MFA devices to which a user can attach | 1 |
| Maximum number of virtual MFA devices | 1,000 |
| Maximum number of custom policies | 200 |
| Maximum number of versions that a custom policy can have | 5 |
| Maximum number of custom policies that can be attached to a user | 5 |
| Maximum number of custom policies that can be attached to a user group | 5 |
| Maximum number of custom policies that can be attached to a role | 5 |
| Maximum number of system policies that can be attached to a user | 20 |
| Maximum number of system policies that can be attached to a user group | 20 |
| Maximum number of system policies that can be attached to a role | 20 |
| Maximum number of characters that a username can contain | 64 |
| Maximum number of characters that a user group name can contain | 64 |
| Maximum number of characters that a policy name can contain | 128 |
| Maximum number of characters that a role name can contain | 64 |
| Maximum number of roles | 100 |
| Number of characters that an alias can contain | 3-64 |
| Maximum number of characters that a custom policy name can contain | 2,048 |
| Maximum number of identity providers (IdPs) | 100 |
| Maximum number of IdP descriptors that an IdP metadata file can contain | 1 |
| Maximum number of certificates that an IdP descriptor in an IdP metadata file can contain | 2 |