I’d gotten out of the social media habit — Twitter and blogging — over the holidays and never really restarted, and now that a quarter has gone by, I’m feeling like I really ought to get back into the habit.

So, it’s time for a catch-up, starting with a round-up of my recent research, and, over the next few days, a glimpse into what I’m currently working on, what clients have been saying, and some thoughts on recent industry news.

Please note that unless otherwise stated, the research notes are available to Gartner clients only.

The Magic Quadrant for Managed Hosting is now out. (See the free reprint if you’re not a client.) This should have been a 2011 document, but was delivered late; consequently, there will be a late-2012 update, back on the normal publication schedule. This Magic Quadrant is being split into two regional ones — one for North America and one for Western Europe — for that late-2012 iteration. That should allow us to cover a broader set of providers and to better focus on the particular needs and desires of the two geographies, rather than presenting a single global view that has tended to be US-centric.

Our most recent set of market definitions, explanation of the market structure, and general pricing guidance can be found in the Pricing and Buyer’s Guide for Web Hosting and Cloud Infrastructure, 2012. This also explains the specific markets covered by our various Magic Quadrants.

Amazon has been a topic of great interest to all of our client constituencies. What Managers Need to Know About Amazon EC2 is a plain-language guide to this aspect of Amazon Web Services (and has some broader guidance on purchasing AWS services in general, as well). It’s targeted at an audience looking for fast facts, including non-technical audiences, like procurement managers and investors trying to get smart on what Amazon does.

The Competitive Landscape: New Entrants to the Cloud IaaS Market Face Tough Competitive Challenges is targeted at a technology provider audience (and potentially at investors). It’s a look at what’s really required to compete in the cloud IaaS market going forward, and it profiles both Amazon and CSC deeply, demonstrating two very different paths to success in this market.

Everyone wonders what cloud IaaS is being used for on a practical basis. In Case Study: Using Cloud IaaS for Business Continuity Solutions, we profile a major consumer electronics retailer, and how they use Amazon to provide a lightweight version of their website when they’re doing maintenance of their primary side, have excessive amounts of traffic, or have a primary-site outage.

Finally, on the CDN front, I’ve updated a previous note with current market info and a bit on front-end optimization: Content Delivery Network Services and Pricing, 2012.