Portal across Zoho One apps

Portal across Zoho One apps

Will Zoho consider a customer portal that works across all Zoho apps?
I know Zoho CRM, Zoho Creator, Zoho Books, etc each have their own customer portal feature.  Our company uses all three of these apps to manage our customers data.  To provide our customers with an exceptional customer experience we'd like to offer them a portal to view their data, info, invoices, etc and without having them create 3 different logins to each apps portals.
I imagine this is a tall task but worth the ask.
Thanks!