Routing in Drupal 9, and lessons learned in Drupal 8

A lot of effort was spent in Drupal 8 converting code to use Symfony routes and to convert from a path-based identity for routes to a machine name (route name) based system. This session will take a step back to see how that played out and where we stand now in 8.0.x. Or perhaps to start a debate, we could frame it as "what happens when getting off the island means you got bitten by sharks?" Then, we will look ahead to Drupal 9 and consider changes in direction, refactoring back to use paths, or how we me might move even closer to Symfony.