Virtual provisioning with implementation resource boundary awareness

A system comprising:

• a first one or more physical computing devices of a virtual resource provider configured to provide shared infrastructure that is generally available to host virtual computing systems for customer accounts of the virtual resource provider;
• a second one or more physical computing devices of the virtual resource provider configured to host virtual computing systems for a first customer account of the virtual resource provider, wherein the second one or more physical computing devices provide a reserved resource pool that is exclusively dedicated for use by the first customer account to provide physical separation between virtual computing systems hosted for the first customer account and virtual computing systems hosted for other customer accounts of the virtual resource provider via the first one or more physical computing devices;
• and
• a control plane component of the virtual resource provider, the control plane component comprising instructions which when executed on or across a third one or more physical computing devices cause the control plane component to:
• receive a request to instantiate a first virtual computing system, for the first customer account, using the reserved resource pool;
• determine that the reserved resource pool does not have sufficient capacity to host the first virtual computing system;
• add another physical computing device into the reserved resource pool, wherein the another physical computing device is a first physical computing device;
• and
• provision the first virtual computing system via the first physical computing device.

A non-transitory computer-readable storage media storing instructions which, when executed by one or more physical computing devices of a virtual resource provider, cause the one or more physical computing devices to implement a control plane to perform operations comprising:

• receiving a request to create a reserved resource pool for hosting virtual computing systems for a customer account, wherein the reserved resource pool is to provide capacity via use of physical computing devices that are exclusively dedicated for use by the customer account to provide physical separation between virtual computing systems hosted for the customer account and virtual computing systems hosted for other customer accounts of the virtual resource provider;
• receiving a request to instantiate a first virtual computing system, for the customer account, using the reserved resource pool;
• determining that the reserved resource pool does not have sufficient capacity to host the first virtual computing system;
• adding another physical computing device into the reserved resource pool, wherein the another physical computing device is a first physical computing device;
• and
• provisioning the first virtual computing system via the first physical computing device of the reserved resource pool.