Interesting.. that wouldn't occur to me because I've had Bank of America Credit cards and a checking account, as well as a Chase checking account and Chase credit cards, and on each site i've been able to view and access my credit card info along with my checking account info. As well as do simple transfers between credit card and checking account. They certainly seem to interact to me.
Is Serve and AMEX different, or is what I'm describing something different? Not trying to argue, but really just curious.
Well that is a little different; let me explain in a little more detail, you are thinking like a customer not like a bank, which is fine as you are a customer not a bank. In the consumer banking division of Chase of BofA there is the traditional depository business of checking savings accounts and then there is the Credit card division which is revolving lines of credits. I actually have accounts both checking/savings and credit cards with both banks, I will use Chase as the example as there website is easier to show how it works.
Back in the beginning of the internet age you would have had separate banking and credit card usernames websites which were not connected because in fact banking and credit cards are separate divisions or possibly entities within the same bank depending on structure. However to make things more convenient for customers as technology has progressed the websites have merged into one to provide seamless integration across product lines.
On Chases website once you are logged on you will notice the web address is https://
chaseonline.chase.com/MyAccounts.aspx the bold part being the subdomain that is the master authentication site for online access to the Chase banking world, they use something referred to as Single Sign On (SSO) to pass credentials between different internal applications.
If you select a bank account the web address will begin with something that looks like this https://
banking.chase.com notice the bolded word banking, this subdomain is the banking world for checking and savings account etc...
If you select a credit card the web address will begin with something that looks like this https://
cards.chase.com/ notice the bolded word cards, this subdomain is the credit card world for Chase.
I don't have a chase mortgage but my guess is https://
mortgage.chase.com/ would be the subdomain etc...
Now here is where it gets really cool https://
payments.chase.com is where all transfers and payments are made, now since all of these companies are internal they know any internal transfer is legit and can make it instant as they can verify the funds, so that is a courtesy to their customers, even though the reconciliation is probably not as instant.
I do not work for Chase (or BofA for that matter), I am just able to discern this information from understanding in general both how banks work and how software for banks is built, this is my best guess, I of course can be off in some of the details.
Now on to how AmEx and Serve are different, well AmEx is a holding company, one of its subsidiaries is actually the American Express Centurion Bank; this is where it runs its consumer banking and credit card business from.
AmEx Serve is not a banking product; it is a prepaid debit card which is acting like a full service bank. The funds are held in custody at either AmEx Centurion or Wells Fargo, they are insured indirectly via pass through FDIC insurance and your limits are jointly tied to the limits you have with the underlying institution. You can also scroll all the way to the bottom of the Serve website and the copyright is actually for the following company name "2014 Serve Virtual Enterprises, Inc.". Both Serve and Bluebird are sister products and I am sure share infrastructure and this is why you can have only or the other.
AmEx probably cannot even legally share data between its credit card business and its prepaid card business, even if you are a customer of both, in fact I called this morning again and Serve confirmed they are a separate entity from the credit card business. Separate website, separate logon.
Banking is an extremely complex and profitable business, as much as there are plenty of avenues for smart consumers to reap benefits from the system, trust me the banks do more than their share of analysis to determine that each product is profitable, they don't look at it like we do they look at the profitability of a product across all consumers if it will make money then it is a good product and that accounts for the slippage due to whatever small percentage of people can game the product. So if Serve is a profitable product and Blue Cash is a profitable product they will not care that x number of people are getting the best of them by combining them that would make their models too complex, they made their margins.
When their models show they are not making the numbers they expect they change the program, Chase Freedom for example used to have much better rewards, I was grandfathered in, it has gradually sucked more and more that I barely use the card only for its rotating categories now. Over time if a program costs them too much like the Blue Cash/Serve deal might, we will get squeezed out of it, so the more it is published the more likely that will happen... At this point I am not too worried. The likely change will be to the Blue Cash card, but in reality they have already changed that they no longer market the card, the percentage of people who will do this is probably small in comparison to the card base in the entire Blue program which is what they probably model.
Sorry if this way more information than you were expecting :)