@ Mukurdhom ,
   
      Since your diagram shows domain1 , domain2 etc.. , wild card certificate would not work , however multi-domain ssl certificate would work. Or in another case, you would have to get SSL Cert for individual domain and since they seem to be hosted on the same webservers , you would have to use multiple IPs on the web servers for each website. It's a little more complicated to support different SSL Certificates on the same IP.

Thanks
Nishant