1. Wait for a single workflow execution.

2. Get scaling and bursting configuration.

3. If a preferred virtual datacenter was provided as input set it otherwise use the ones in the burst configuration. For each of these virtual datacenters:

a. Downscale an existing vApp that did not reach the minimum number of instances for a given tier by deleting a virtual machine for a given tier.

b. If no vAPP is available, or if downscaling fails, undeploy and delete a vApp.

4. Before the virtual machine or vApp has been deleted, get the Tier 1 IP addresses, and remove them as members of the load balancer pool matching the current virtual datacenter.