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This section describes the multi tenant architecture of the WSO2 ESBCarbon. This architecture supports the deployment of applications, web applications, web services, ESB mediators and mashups. The multi tenancy architecture of WSO2 aims to achieve the following:

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  • Deploying artifacts
  • Applying security
  • User management
  • Data management
  • Request throttling
  • Response caching

WSO2 Carbon provides a number of Admin services which have special privileges to manage the server. These admin services are deployed in the super tenant. Other tenants can make use of these admin services to manage their deployment. The admin services operate in a tenant aware fashion. Thus, privileges and restrictions that apply to any client using an admin service are taken into account.

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The multi tenancy architecture described above mainly refers to a scenario where a single instance of a Carbon server acts as a single multi tenant node. In a situation where a very high load of requests are handles, you may need multiple multi tenant nodes. In order to operate with multiple multi tenant nodes, you need load balancing. The load balancer you use also needs to be tenant-aware. See Tenant Aware Load Balancing Using the WSO2 Elastic Load Balancer for further information.