All, please take the time to educate yourselves on things like this. You must be organized to pull off "churning" bank and CC bonuses. I am sure many here that are armed with their mystery shopping excel sheets could do it.
You should also review what is best for your overall financial status. Some gov't bonds might be free of state taxes, for example, and there might be a maximum amount you can buy of certain bonds (such as I-bonds). In some cases, if you do not have add'l emergency money and need to cash out a bond before it matures, you may forfeit some interest.
That said, I have never seen an offer that allows you to defer the payments. The credit card companies will require a minimum payment per month. This was part of an overhaul during the Obama administration to show customers the minimum payments, how long it would take to pay by making only minimums, and total interest paid etc that must be disclosed to consumers.
The INTEREST is deferred, the PAYMENTS are not.
From the article that was linked, please double read the last sentence.
Credit card issuers offering 0% introductory APR promotions allow consumers an opportunity to use credit cards as interest-free, short-term loans for purchases, balance transfers or both. But these offers come with risks: if a balance is unpaid by the end of the period, interest can accrue rapidly. Credit cards come with notoriously high interest rates, so be extremely disciplined about paying enough each month to zero out your debt within the no-interest period. And know that if you miss a payment or pay late, you risk losing the intro rate entirely.