# Choosing a Cluster Tier : Dedicated Tier or Serverless Tier

__*Dedicated Tier*__
__*Serverless Tier*__

![`smart`](ClusterTier_en_001_20230310.png)

------------------------------------------------------------------------------------

+ For `Dedicated Tier` clusters, it is an exclusive cluster plan provided by `TiDB Cloud`, which is ideal for users who need a high degree of control and flexibility. Dedicated Tier supports the individual hosting of an entire TiDB Cloud cluster, which can be easily optimized and adjusted for business needs.you can customize the cluster size of TiDB, TiKV, and TiFlash easily according to your business need. For each `TiKV` node and `TiFlash` node, the data on the node is replicated and distributed in different availability zones for high availability.
+ For `Serverless Tier` cluster, it is built on `TiDB Cloud` and automatically scales `TiDB` clusters dynamically according to business needs. Unlike `Dedicated Tier`, - - `Serverless Tier` offers greater flexibility and lower cost of use, making it ideal for large-scale workloads. It is billed based on usage and does not incur any charges when there is no usage.
Here are the details about Dedicated Tier and Serverless Tier in the `PingCAP` doc:
https://docs.pingcap.com/tidbcloud/select-cluster-tier#serverless-tier-beta