Very frequently, the right answer for an MVP is something like "an e-mail newsletter" or "a Salesforce extension" or "a CSV file" or "an IDE plug-in" or "throwing a pizza party for your target market and performing the service for them yourself". I've seen startups charge $3K+/month to dump a CSV file on a client's FTP server. Go where the user can most conveniently make use of your product; for a lot of businesses, that is neither app nor website.