• The Amazon Systems Manager CloudWatch Dashboard will no longer be available after April 30, 2026. Customers can continue to use Amazon CloudWatch console to view, create, and manage their Amazon CloudWatch dashboards, just as they do today. For more information, see [Amazon CloudWatch Dashboard documentation](https://docs.amazonaws.cn/AmazonCloudWatch/latest/monitoring/CloudWatch_Dashboards.html). 

# Managing tiers
<a name="parameter-store-advanced-parameters"></a>

Parameter Store includes *standard parameters * and *advanced parameters*. You individually configure parameters to use either the standard-parameter tier (the default tier) or the advanced-parameter tier. 

You can change a standard parameter to an advanced parameter at any time. You *can’t* change an advanced parameter to a standard parameter for the following reasons:
+ Reverting would cause the system to truncate the size of the parameter from 8 KB to 4 KB, resulting in data loss.
+ Reverting would remove policies attached to the parameter.
+ Reverting would change the parameter encryption.

For information about encryption used by Parameter Store, see [How Amazon Systems Manager Parameter Store uses Amazon KMS](https://docs.amazonaws.cn/kms/latest/developerguide/services-parameter-store.html) in the *Amazon Key Management Service Developer Guide*.

**Note**  
If you no longer need an advanced parameter, or if you no longer want to incur charges for an advanced parameter, delete it and recreate it as a new standard parameter.

## Standard and advanced parameters
<a name="parameter-store-advanced-parameters-table"></a>

The following table describes the differences between parameter tiers.


****  

| Feature | Standard | Advanced | 
| --- | --- | --- | 
| Maximum parameters<br />(per Amazon Web Services account and Amazon Web Services Region) | 10,000 | 100,000 | 
| Maximum value size | 4 KB | 8 KB | 
| Parameter policies | Not supported | Supported<br />For more information, see [Assigning parameter policies in Parameter Store](parameter-store-policies.md). | 
| Share parameters across Amazon Web Services accounts | Not supported | Supported<br />For more information, see [Working with shared parameters in Parameter Store](parameter-store-shared-parameters.md). | 
| Cost | No additional charge | Charges apply<br />For more information, see [Amazon Systems Manager Pricing for Parameter Store](https://www.amazonaws.cn/systems-manager/pricing/#Parameter_Store). | 

**Topics**
+ [Standard and advanced parameters](#parameter-store-advanced-parameters-table)
+ [Specifying a default parameter tier](ps-default-tier.md)
+ [Changing a standard parameter to an advanced parameter](parameter-store-advanced-parameters-enabling.md)