Network nodes - transactional network clients. They compete with each other by locking an arbitrary amount for the generating and proposing of new blocks. Block generation is a computationally light task and therefore running a node does not require neither specialised equipment nor storage. The intention is for normal mobile devices to be able to run as a node within the network. The non-deterministic nature of the bidding process makes it so that even nodes bidding the minimum amount of DUSK have a fair chance to win the block generation sortition lottery
Provisioners - These are nodes that have committed a certain minimum stake to the Dusk Network and take care of more network intensive tasks such as block verification, voting, and notarization (VVN operations). These types of nodes are non-transactional
The intention is to create an economy where nodes compete for block rewards, while Provisioners earn a steady ROI.
The rewards paid to Provisioners are inversely proportional to their staked amount (i.e. bigger stakes get proportionally rewarded lesser, in respect to smaller stakes) and are earned regardless of Provisioners' participation in the VVN operations . This measure is not a viable option outside of the Dusk Blockchain, where the probability to win the sortition lottery and therefore take an active part to the SBA⋆ algorithm is not associated with a reward, except the sole payment of the transaction fees. This kind of economy not only prevents the rich get richer problem affecting Proof-of-stake, but it also incentivises users to decentralise their stakes into multiple Provisioners in order to obtain maximum financial gain. This latter point would lead to scalability problems in other consensus algorithms, while it does not have any significant impact on SBA⋆ due to its "Player Replaceability" property