Tech's biggest companies are reporting earnings this week, and here are the big questions they'll have to answer

Amazon, Apple, and Facebook - three of the horses that drive today's tech industry - are set to report quarterly financial reports this week.

And a handful of other high-profile tech companies, including Twitter, Pandora and LinkedIn, are set to provide updates to Wall Street as well.

A lot has changed in the three months since these companies last reported earnings, with new CEOs taking the reins, changing product line-ups, and in some cases wild swings in market valuations.

For investors trying to get a read on the state of the tech industry for the rest of the year, as well as on the broader economy, this week's batch of reports will be critical.

Here are the key things to look out for:

Disclosure: Jeff Bezos is an investor in Business Insider through hispersonal investment company Bezos Expeditions.