General architecture of Apsara Stack
Apsara Stack is a private cloud architecture designed for customers in the finance industry who require enhanced privacy, exclusivity, custom security policies, or secure private network access. Apsara Stack is available in four editions: Apsara Stack Enterprise, Apsara Stack Insight, ZStack for Alibaba Cloud, and Apsara Stack Agility.
Apsara Stack Enterprise
Apsara Stack Enterprise is a full-stack cloud platform for medium and large enterprises. It is built on the same distributed architecture as Alibaba Public Cloud. This open, unified, and trusted platform is designed specifically for enterprise use.
Apsara Stack Enterprise is designed for clusters with more than 50 physical servers. It is suitable for large financial institutions, such as banks and securities firms, that are building their own private clouds. You can use the architecture shown in the following figure to deploy Finance Cloud products, including virtual machines (VMs), databases, storage, middleware, and big data.

Apsara Stack Insight
Apsara Stack Insight is built on the same architecture as Alibaba Public Cloud. It is designed for large enterprise customers, such as banks and securities firms, that are building data centers with more than 30 physical servers. You can use the architecture shown in the following figure to deploy big data products from Finance Cloud. These products include offline computing, real-time analytics, stream computing, PAI, and a marketing engine.

ZStack for Alibaba Cloud
ZStack for Alibaba Cloud is similar to OpenStack and is designed for small and medium-sized customers. It has no limit on cluster size, which makes it ideal for financial institutions that need to quickly build a virtualized cloud platform. You can use the architecture shown in the following figure to deploy Finance Cloud products, including host virtualization, virtual machines (VMs), networking, and storage.

Apsara Stack Agility
Alibaba Cloud is the sole distributor of Docker in China. Apsara Stack Agility integrates containerization features and is suitable for small and medium-sized customers. You can use the architecture shown in the following figure to use Finance Cloud products with Apsara DevOps and middleware. There is no limit on the cluster size, which makes it ideal for financial institutions that are building a container platform.
