In Drupal 8.x, "services" refer to objects that are available to your module to provide for common tasks such as accessing the database, updating the user session, or sending an email. The underlying infrastructure for services comes from the Symfony framework on which Drupal 8.x is based, so they are baked into core and readily available to use. This session will demonstrate how to find which services are available, how to use them in your code, and how to create a new service from scratch.