storing, in non-transitory electronic storage, environment state information maintaining a collaboration environment, the environment state information including a first work unit record describing a first unit of work assigned to a first user, the first work unit record including a first digital content item that the first user is expected to review in order to complete the first unit of work;

managing, at a server, the environment state information maintaining the collaboration environment, wherein the first user interacts with the collaboration environment via a first remotely located client computing platform communicating with the server over one or more Internet connections;

establishing the one or more Internet connections between the first remotely located client computing platform and the server;

effectuating communication of information from the server to the first remotely located client computing platform over the one or more Internet connections so that the first remotely located client computing platform presents an instance of a user interface of the collaboration environment, wherein the first work unit record and the first digital content item are accessed through the user interface;

obtaining, at the server, user input information conveying user input on, or relating to, the first digital content item through the user interface presented at the first remotely located client computing platform;

generating, at the server and responsive to obtaining the user input information, a second work unit record for a second unit of work, the second work unit record being subordinate to the first work unit record within a first record hierarchy including the first work unit record and the second work unit record; and

effectuating storage of information defining the second work unit record in the non-transitory electronic storage.