Flows support processing bulk records. Outbound messages contain the endpoint URL. An external ID is unique to an external application while the primary ID is unique within the organization. Data Loader supports importing .csv files from Excel and is used to manage bulk data loads. Ajax components in Visualforce pages allow asynchronous page updates and include action functions, pollers, and regions. Auto-response and escalation rules are mandatory for Cases and Leads. REST and SOAP APIs differ in the number of records that can be handled. Debug logs track Apex code execution. Cases can be created via Email-to-Case or Web-to-Case. Objects remain in the recycle bin after being undeleted until permanently deleted.