Ksatish: One website has 5 domains all are opening separately without any redirect. In those domains one was optimised now a client asking another domain in those 5 to optimize is it possible or not?
Search3w: Dear Ksatish,
I prefer one big website divide into “areas”.
Be sure that Google knows about your brother/sister sites connections, and I can have proof it to you.
In and of itself that Google didn’t harm your site until the present time doesn’t mean it wouldn’t do it from here on.