Computer networks for selective node delivery

A method for optimizing interactive data units delivery over a network, the method comprising:

• a. aggregating, at a server over the network, transaction data from various sources for multiple users, each user associated with a client node and represented by unique user attributes;
• b. generating a plurality of interactive data units for a campaign by processing the transaction data with pre-defined parameters, wherein the pre-defined parameters are set by interactive data providers prior to a start of the campaign, and wherein each interactive data unit comprises specific activation requirements;
• c. identifying, by the server, one or more appropriate users for at least one interactive data unit from the plurality of interactive data units generated in (b) based on a comparison of the user attributes and the specific activation requirements of the at least one interactive data unit;
• d. upon identifying the one or more appropriate users, transmitting the at least one identified interactive data unit to the respective client nodes associated with the one or more appropriate users over the network;
• e. monitoring user engagement with the delivered at least one interactive data unit via the respective client nodes and generating engagement metrics;
• and
• f. updating, during the ongoing campaign and while monitoring the user engagement, the pre-defined parameters based at least in part on the engagement metrics, thereby optimizing the delivery of the outstanding interactive data units in the ongoing campaign.