Professional serverless Kubernetes (ASK Pro) clusters are developed based on ASK standard clusters and provide higher reliability and security in large-scale production environments for enterprise users. ASK Pro clusters are also covered by service level agreements (SLAs) that include compensation clauses.


ASK Pro clusters are developed based on ASK standard clusters. This type of cluster inherits all benefits of ASK standard clusters, such as compatibility with the open source version, automated O&M, and scaling within seconds. In addition, ASK Pro clusters provide higher reliability and security, and are covered by SLA terms for compensation. ASK Pro clusters are suitable for enterprises that require higher security and stability for large-scale workloads in production environments.


  • Internet enterprises. These enterprises deploy their business on a large scale and require business management with high stability, security, and observability.
  • Big data computing enterprises. These enterprises deploy large-scale data computing services, high-performance data processing services, and other services with high elasticity. These services require clusters with high stability, high performance, and efficient computing capabilities.
  • International enterprises that run their business in China. These enterprises prioritize security and services that provide SLAs with compensation clauses.
  • Financial enterprises. These enterprises require SLAs with compensation clauses.


  • Managed master nodes with high reliability: The management of large-scale clusters is supported. etcd is a reliable store for disaster recovery and data restoration. etcd uses cold backups and hot backups to ensure data availability for ASK Pro clusters. Key metrics are collected for you to gain insights from control components. This allows you to detect potential risks.
  • Clusters with higher security: By default, etcd uses encrypted disks in the control plane. In the data plane, kms-plugin is installed to encrypt Kubernetes Secrets. Container Service for Kubernetes (ACK) provides security management for this type of cluster. The advanced security management feature allows you to inspect containers in the running state and enable auto repairing.
  • SLA guarantees: ASK Pro clusters are covered by the SLA that supports compensation clauses. A level of 99.95% uptime is guaranteed for the cluster API server.


Billing of professional ASK clusters


The following table compares ASK Pro clusters with ASK standard clusters.

Category Feature ASK
ASK Pro cluster ASK standard cluster
Cluster size N/A Up to 10,000 elastic container instances Up to 1,000 elastic container instances
SLA N/A 99.95% (supports compensation) 99.90% (does not support compensation)
API Server Custom parameter settings Supported Not supported
Availability monitoring Supported Not supported
ETCD High-frequency cold backups, high-frequency hot backups, and geo-disaster recovery Supported Not supported
Observability metrics Supported Not supported
Security management The advanced security management feature that supports data encryption. For more information, see Use KMS to encrypt Kubernetes Secrets. Supported Not supported