The chapter on Technology Design states "Although CBDC is often associated with Distributed Ledger Technology (DLT — see Box 5), we do not presume CBDC must be built using DLT. Most existing payment systems are run on centralised technology stacks, and there is no reason CBDC could not also be built this way. However, DLT includes a number of potentially highly useful innovations, which can potentially be adopted independently of each other, allowing us to use the specific features of DLT which are most relevant and appropriate, without using DLT in its entirety."
The paper also discusses the risk-free nature of the currency (compared to deposits held in a commercial bank where consumers in principle face credit risk if the bank defaults), resilience, and innovation. And it notes the interesting related questions of whether the CBDC would be interest-bearing, and to what extent consumers switching from commercial bank deposits to the CBDC would impact the commercial banking model (using deposits to fund lending).