Heroku and custom domains for SaaS

When building a SaaS app on the Heroku platform, how easy is it to configure custom domains for customers who signup for the SaaS application?

I would be looking for the following:

  1. Wilcard support so people can signup and use a subdomain of my main products domain

  2. Allow customers to use their own custom domain and point it to my domain
    customer1.com -> www.example.com

Does Heroku have any limits in this regards? Can they support 100K custom domains for example?

I can’t seem to find a solid answer to my question so I thought I’d ask here.


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Seems like it’s possible: http://stackoverflow.com/questions/4871035/rails-heroku-and-subdomains-is-my-special-case-scenario-feasible

You should contact the folks at Heroku, I’m sure they’ll be happy to answer, especially for questions that deal with limitations that many would likely never see.


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