When I was hired for my role as an SRE at http://imvu.com/ I had approximately zero savings. They were unable or unwilling to give me cash for my relocation bonus before my first employed day, but they were willing to pay for various moving expenses directly, renting me a moving van, paying for a hotel partway, renting a storage unit, and while I stayed on a friend's couch while looking for an apartment, I have heard of them paying for hotel accommodations for new hires while they were looking for housing before they received their relocation bonus or first paycheck. It's not uncommon at all, just be up-front and ask for it when discussing compensation and signing terms.

I have friends who work for Amazon (AWS). When relocation was discussed, they were just cut a check for the expected costs (and then some).

Microsoft paid my entire relocation expense and I never (directly) saw a bill or paid a dime for it. I know Qualcomm does the same thing. I was on the hook for a year - if I quit before one year was up, I owed Microsoft some pro-rated amount of money.

In 1999 or 2000 I turned down an offer from Microsoft, and they asked if I owned a house and if I needed Microsoft to buy that house to get me to say yes. I don't know how that would have worked, but it was an impressive offer.

Amazon paid for my entire move (Europe to SF) without me having to incur any expenses beyond the taxi to and from the airports.

Not necessarily. My last internship paid my relocation expenses, they just mailed me a visa gift card with the money a month or two before I started.