The market doesn't know what to make of Rackspace Hosting (NYSE: RAX). Following this week's first-quarter report, the stock has dipped and jumped by turns, ending up pretty much where it was before.

I'll tell you what I think. Rackspace missed earnings estimates by a penny per share this time, which was only the second earnings miss in the last nine quarters. More to the point, Rackspace hit Street targets exactly in those other seven quarters, including an unbroken five-quarter streak.

That terrific consistency has been rewarded with a 143% return over the last year. And I don't see this trend stopping any time soon for the burgeoning cloud-computing powerhouse.

Why? Because Rackspace manages its earnings with a very firm hand. Just as Red Hat (NYSE: RHT) openly admits to letting earnings rise only because analysts expect them to and as Netflix (Nasdaq: NFLX) pumps every extra penny into more and better streaming content licenses, Rackspace has a firm grip on the accelerator.

This vehicle is moving exactly as fast as its driver wants it to, thank you very much.

Rackspace is notable, among other things, for actually reporting return on capital every quarter. As CEO Lanham Napier told me on the phone this week, ROC is a factor in every investment Rackspace makes. "It's a navigational guide for us," he said, and went on:

Given that we operate in a relatively capital-intensive industry, the return on capital that we generate really matters. We are an EVA [economic value added) shop. I feel like we're one of the few companies in our industry that understands this.

And while we're talking about streaks, Rackspace's rolling ROC has shown steady improvement and stands 130 basis points above last year at 11.9%. By contrast, (Nasdaq: AMZN) is letting its ROC slide southward and rival SAVVIS (Nasdaq: SVVS), which was recently acquired by CenturyLink (NYSE: CTL), sports a small and bumpy ROC.

If you're disappointed in Rackspace's slow earnings growth and the high P/E ratios it creates, rest assured that it's all according to plan. Like Red Hat and Netflix before it, Rackspace just isn't ready to focus on earnings yet because there's too much growing left to do.

And if you want to follow the company's growth at a risk-free distance, we have a new service just for you: add Rackspace to your Foolish watchlist by clicking here.