SSO - Enable all agents and supervisors in the deployment for SSO.
Hybrid - Enable agents and supervisors selectively in the deployment for SSO. ...
Non-SSO - Continue to use existing Active Directory-based and local authentication, without SSO.
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cust_contact/contact_center/pcce/pcce_12_6_1/maintenance/guide/pcce_b_features-guide-1261/pcce_b_features-guide-1261_chapter_01110.html

An AW/HDS machine is a hybrid of an AW client machine and a Secondary AW machine, and it is used to run automated deferred sync jobs. These jobs are typically used to transfer data between two or more AW machines, and the AW/HDS machine acts as the intermediary, making sure that all of the data is kept up-to-date and in sync.
References: [1] https://www.oracle.com/webfolder/technetwork/tutorials/obe/fmw/oim/11gR2-PS3/OIM_11gR2_PS3_Installation/OIM_11gR2_PS3_Installation_Step2.html [2] https://docs.oracle.com/cd/E24628_01/doc.121/e28814/config_hds_aw.htm [3] https://docs.oracle.com/en/middleware/lifecycle/12.2.1.4/core/one-time-processes-deferred-synchronization-jobs.html

Common Ground is a Cisco solution for contact center environments, which enables customers to use multiple channels, such as voice, chat, and email, to interact with agents. Upgrading Common Ground usually involves several steps, including:
Updating the hostname as appropriate: Depending on the configuration and organization of the system, it may be necessary to update the hostname to ensure that all components are properly identified and connected.
Database migration: As part of the upgrade process, the Common Ground database may need to be migrated to a new version or schema. This is done to ensure that the database is compatible with the new version of Common Ground and that all data is preserved during the upgrade.
Updating IP address: Depending on the network and IP addressing scheme, it may be necessary to update the IP addresses of Common Ground components to ensure that they are properly configured and accessible.
Updating registry: Windows registry may need to be updated as well, to ensure that the correct configurations and settings are in place after the upgrade.
In-place upgrades: In-place upgrades are the upgrades that can be done on the same version of the software without the need to install new version of the software.

Two types of upgrades available for CCE are Technology Refresh and Standard. Technology Refresh upgrades replace outdated hardware and software components with the latest versions, while Standard upgrades include features and bug fixes.

PROCMON, DUMPLOG, and Unified System CLI are three tools that can be used to download logs for CCE troubleshooting. PROCMON is a Windows-based tool that allows administrators to capture log files and view them in real time. DUMPLOG is a command-line tool that can be used to download log files from CCE nodes. Finally, Unified System CLI is a web-based tool that can be used to access the CCE system and download log files. Reference: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucce/troubleshooting