In 2009, cloud computing went mainstream to become one of the biggest tech buzzwords of the year 2010. “Take it to the cloud!” has become a popular motto for large enterprises, small businesses and start ups. Cloud computing services exist along a spectrum from open public to closed private.Gartnerexpects all large enterprises will have a dynamic sourcing team in place by 2012 that is responsible for ongoing cloudsourcing decisions and management.

We partnered withPeerIndex,again,to come up with a list featuring the 25 most influential people on Twitter on the topic of cloud computing. Our top 25 list is not ranked based on their overallPeerIndex score, but based on each one’s topic resonance score, which measures how their actions within cloud computing community resonant with the community.

You can follow our list of Cloud Computing’s top 25 influentials onTwitteror get more info on thePeerIndex groupwe’ve created to stay on top of the latest news, insiders’ insights and emerging trends in cloud computing.

1.Jeff Barr

Calling all Scaleup founders! Join the Soonicorn Summit on November 28 in Amsterdam.

Meet with the leaders of Picnic, Miro, Carbon Equity and more during this exclusive event dedicated to Scaleup Founders!

PeerIndex: 65

It comes as no surprise to find someone from Amazon on our #1. Jeff Barr is a Senior Manager at Cloud Computing Solutions at Amazon.com and a Web Services Evangelist. If you simply can’t get enough of his tweets, you can read his bloghere.

Follow@jeffbarr

2.Werner Vogels

PeerIndex: 66

Werner Vogels is the CTO of Amazon and wasone of the speakersofTheNextWeb conferencein 2010

Follow@werner

3.James Urquhart

PeerIndex: 65

Urquhart describes himself in his Twitter bio as: “Father, husband, technologist, author: The Wisdom of Clouds (CNET), cloud computing SME” You can read his posts on cloud computinghere.

Follow@jamesurquhart

4.Vanessa Alvarez

PeerIndex: 66

Vanessa Alvarez works as an analyst with Forrester covering storage.Her focus as a researcheris primary on storage architectures and strategy, the evolution of these as they relate to converged infrastructure and cloud computing scenarios.

Follow@vanessaalvarez1

5.Reuven Cohen

PeerIndex: 65

Founder ofEnomaly, a world wide leader in Cloud Computing and creator of theCloudCampseries of events around the globe. You can read Cohen’s bloghere.

Follow@ruv

6.Krishnan Subramanian

PeerIndex: 63

Better known as Krish, he is an industry analyst covering Cloud Computing and Open Source, an advisor, entrepreneur andblogger.

Follow@krishnan

7.William Toll

PeerIndex: 67

A cloud computing marketing professional that holds the position of VP, Marketing at the web performance companyYottaa.

Follow@utollwi

8.Dana Gardner

PeerIndex: 63

Gardner is president and principal analyst atInterarbor Solutions. He is also abloggerand podcaster.

Follow@Dana_Gardner

9.Mårten Mickos

PeerIndex: 61

The former CEO of MySQL is now the CEO ofEucalyptus Systems. Eucalyptus Systems delivers private cloud software that enables enterprises and government agencies to establish their own cloud computing environments.

Follow@martenmickos

10.Simon Wardley

PeerIndex: 63

Wardley currently works as a Researcher atLeading Edge Forum (CSC). You can read his posts on his personal blog“Bits or pieces?”.

Follow@swardley

11.Christofer Hoff

PeerIndex: 63

Director, at Cloud & Virtualization Solutions, STBU, Cisco Systems, Hoff is a busy man as he is also founder atHacKidand founder & Chief Goat Herder atCloudAudit. Read his bloghere.

Follow@beaker

12.Michael Sheehan

PeerIndex: 62

Based in San Francisco Bay Area, Sheehan is a technology evangelist atGoGridand blogger atHighTechDad.com

Follow@HighTechDad

  1. Greg Knieriemen

PeerIndex: 63

Co-host atInfosmack, podcast on enterprise tech and  Vice President atChi Corporation

Follow@Knieriemen

14.Zoli Erdos

PeerIndex: 63

Editor, publisher atCloudAveandEnterprise Irregulars. Erdos is also a startup advisor and Program Chair atSVASE(Silicon Valley Association of Startup Entrepreneurs)

Follow@ZoliErdos

15.Randy Bias

PeerIndex: 60

CTO and Co-Founder atCloudscaling, a cloud computing consulting firm

Follow@randybias

16.George Reese

PeerIndex: 62

Founder and CTO ofenStratus Networks, founder ofValtiraandO’Reilly Cloud Author.

Follow@georgereese

17.Simone Brunozzi

PeerIndex: 61

Amazon Web Services Technology Evangelist for Asia Pacific (APAC), read his personal bloghere.

Follow@simon

18.Joe Baguley

PeerIndex: 61

CTO Europe atQuest Software

Follow@JoeBaguley

19.Denise Dubie

PeerIndex: 62

New Media Principal at@CAInc, editor/writer/techie focused on IT management, automation, service assurance@CAsvcAssur

Follow@ddubie

20.Jeremy Geelan

PeerIndex: 58

President & COO atCloud Expo, Inc., Chairman at21st Century Internet Group, Inc, Media Advisor atKaazing Corporationand Founder at Web 2.0 Journal & Green Technology Journal

Follow@jg21

21.Rod Trent

PeerIndex: 64

Global Social Media, Community Manager at1Eand CEO, Owner atmyITforum.com, Inc

Follow@rodtrent

22.James Governor

PeerIndex: 65

Principal Analyst and co-founder atRedMonk

Follow@monkchips

23.Stephen Foskett

PeerIndex: 61

Foskett Services, community organizer at Gestalt IT and File System Storage MVP at Microsoft

Follow@sfoskett

24.Sam Johnston

PeerIndex: 63

Technical program manager in the Site Reliability Engineering team at Google Switzerland

Follow@samj

25.Riitta Raesmaa

PeerIndex: 67

Entrepreneur, Founding Partner atSopima. You can read herblogin English and Finnish.

Follow@raesmaa

Don’t forget you can follow how the Top 25 changes over time via ourPeerIndex groupand do let us know if we missed one of your fave thinkers on cloud computing in the comments.

Story byAmalia Agathou

Amalia Agathou is the Community Director for The Next Web. She’s studied Information and Communication Systems Engineering and has shared he(show all)Amalia Agathou is the Community Director for The Next Web. She’s studied Information and Communication Systems Engineering and has shared her time between the startup and fashion scene. She has worked as an editor for The Next Web, House& Garden and Glamour magazine.

Follow her onTwitter

Get the TNW newsletter

Get the most important tech news in your inbox each week.