Hi @melaniem1,
Resource Pools have been around a long time. My understanding of their original intention was to formally segregate users into one or more (but only one per user) Resource Pools to make it conceptually easier to "grab and work with" that set while assessing, prioritizing, and assigning work using the forerunner versions of the current tools for resource management and capacity planning. Some of those forerunners were Flash based, and -- although slick -- struggled to handle too much data, so I suspect there might have been some "performance reasons" for providing and promoting the Resource Pool concept, too. Workfront's (intentional and desired) adoption by larger companies with more users increased lead to the release of the Resource Manager concept, recognizing the real world need to distribute such planning across multiple dedicated organizers.
Meanwhile...
In contrast to those highly structured Good Reasons for having Resource Pools, another trend towards more unstructured work was evolving, and lead to the release of the Team feature within Workfront. Where Resource Pools were designed to have "someone" plan the work for "just these users", Teams were designed to have "whomever (on the Team) willing to do the work volunteer to Work On It", and (perhaps more tellingly) allow "users to belong to multiple teams", which is many industries is a better fit to the reality of how work flows.
Which is better, of course, All Depends.
- for well defined, relatively static (i.e. infrequent company re-orgs), siloed work, Resource Pools (perhaps distributed to Resource Managers) might be Just The Ticket
- for self-directed, fluid, collaborative work where the funnel (or fire-hose) needs to be handled asap, Teams might be a Better Fit
- for organizations who have both types of work, it might also be advantageous to use both Teams and Resource Pools, even if (as is common) only "one" Resource Pool is created in order to use the current features, noting that their filtering (and performance) have evolved
Regards,
Doug