Your dApp will be provisioned on a side chain or private chain (based on your choice), which will run in parallel to the AERGO public chain. You (dApp developer) will be able to choose via the Hub interface how many nodes you’d like to host and maintain your dApp. AERGO qualified IT and cloud providers will offer their highly available computing resources to the dApp developer via the AERGO Hub. AERGO Hub will match the dApp requirements with the resources requested and will maintain your network.
Unless, your question is asking whether you are using your own blockchain and not AERGO? If so, you can connect your own blockchain to AERGO through Hub and access the resources you need through Hub and Horde, but some features will be limited