Hi @hemal.mehta ,
1) Regarding information on WebEx Contact Center, there is a dedicated section comprising of User Guides for different components, Data sheets, Troubleshooting Technotes on Cisco.com website.
• Path : Products > Contact Center > Webex Contact Center
2) UCCE continue to grow and exist independently, but businesses can opt for WebEx Contact Center as backup to their contact center business in order to maintain 100% uptime.
Additionally, Cisco has launched Webex Contact Center Enterprise which is a cloud deployment with agent capacity matching UCCE.
You can go ahead and explore the same.
Thanks