Defining Cloud Computing

Cloud computing is a very active community. The Google Group gets 600 posts per month and many bloggers are covering the space. However, “cloud computing” is impossible to define in a way that satisfies everyone (or even most). Cloud computing is not alone in this controversy, consider the definition and meaning of “Web 2.0″, “mashups” or “RESTful architecture”. All of these terms are relatively recent. According to Google Trends, these terms became popular to the general public sometime between 2005 and 2007:

• Web 2.0 - often confused with RIA, AKA Social Computing, Long-Tail Apps, Crowdware (2005 by O’Reilly Media)
• Mashup - made popular by Google Maps, AKA Composite/Situational Apps. (2005)
• REST - Has a strict definition, but many don’t understand it and abuse the term. (2006 by R. Fielding)
• Cloud computing - collides with many other terms, such as SaaS, Grid, Utility, PaaS, etc. (2007)

The definition of cloud computing is in progress:

There’s a Darwinian evolution of the exact definition of cloud computing running around. We’re about a country mile away from “knowing when I see it”, which is excellent progress. The cloud to everyone’s silver-lining has enough material to write a 3 volume desktop reference at this point. - Michael Cote, June 2008

Definition #1 - “Cloud computing is the realisation of Internet (”Cloud”) based development and use of computer technology (”Computing”) delivered by an ecosystem of providers. - Sam Johnston, July 2008

Definition #2 - “Cloud computing = network computing. I love the idea of cloud computing, the next evolution of the most network intensive architecture possible, but one that if it works well, is transparent. It’s all about the transparency.” - Douglas Gourlay, Cisco, May 2008

Definition #3 - “There seems to be a group myopia around so-called “cloud computing” and its definitions. What we’re really talking about are “cloud services” of which, “computing” is only a subset…Cloud services are not SaaS. They are far more akin to web services…” - Randy Bias, neoTactics, May 2008

(Anti-)Definition #4 - “Note that I refer to cloud services, not to the could. I am not interested in defining cloud as a term, because I don’t think it’s very useful. For those of us in the distributed computing’s pace

The Working Definition (Winner!):

“…the notion of providing easily accessible compute and storage resources on a pay-as-you-go, on-demand basis, from a virtually infinite infrastructure managed by someone else. As a customer, you don’t know where the resources are, and for the most part, you don’t care. What’s really important is the capability to access your application anywhere, move it freely and easily, and inexpensively add resources for instant scalability.” - Mitchell Crandell, Rightscale, June 2008

Taxonomies of the Cloud Space

Taxonomies are useful to provide insight into a market. It classifies a multitude of players into a smaller bucket.

Andreessen’s Platforms - September 2007

Provided an early taxonomy model for emerging cloud platforms

Platform being a system that can be programmed

• Access API - platform that provides web service endpoints
• Plug-In API - platform invokes your code, that you have deployed remotely
• Runtime Environment - your code runs inside the platform’s process space.

Mehta 11 Layer Stack, April 2008

1. Facilities (space, power, cooling)
2. Network
3. Hardware (e.g. servers Amazon EC2 runs)
4. Hardware virtualization (e.g. Xen for EC2) - optional
5. O/S (e.g. Linux)
6. Systems Management (e.g., tools to manage EC2 instances)
7. Application Middleware (e.g., MySQL on EC2)
8. Application Code
9. Application APIs / Web Services
10. GUI for Application
11. GUI for Application Development / Customization

Croll Cloud Stack, June 2008

7 layer stack within Turnkey app and Generic Platform.

Turnkey app

• SaaS
• Extensible app
• Generic IDE
• Constrained APIs
• App Cluster
• Virtual Data Center
• Virtual Servers

Generic Platform

The bottom of Alistair’s stack includes “root access “style compute clouds.

Robert Anderson, July 2008

3 layer stack

• Software (SaaS)
• Platform (PaaS)
• Infrastructure (IaaS)

This is the model taxonomy for this session.

Related Concepts and Terms

• Infrastructure as a Service (IaaS), Hardware as a Service (HaaS) are synonyms to cloud infrastructure.
• Virtualization
• Hosting
• Autonomic computing
• Distributed computing
• Grid computing

Cloud Applications

• SaaS
• S+S (Software+Services)
• Managed Service Provider (MSP)

Although several other quick-service restaurants like McDonald's lack any comprehensive Wi-Fi plan--Burger King, Wendy's, and Subway to name three of the largest--Wayport is locked out of working with direct competitors. This opens the potential for another firm to handle a several-thousand-location network. Wayport has worked with both McDonald's corporate-owned stores (about 2/3rds of stores in the U.S.), as well as reaching out to franchisees, who Lowden noted pay a predetermined flat rate for the service via McDonald's. "It's made them incredibly efficient to be able to offer this to their franchisees at one price, instead of variable pricing," he noted. Wayport acts as the layer between various telecom providers, applications and services, and the stores.

Wayport provides several kinds of back-office services, although credit-card processing was the first thing htey rolled out. They've extended to remote video feeds for security, Redbox DVD rental systems that are found in some McDonald's, and kiosks used for job applications. Lowden said Wayport offers things as straightforward but critical as a dial-up fail-safe when a broadband connection drops.

Wayport also manages AT&T's hotspot network, which puts them in the unwiring seat for the 7,000-odd Starbucks stores that will converted from T-Mobile to AT&T service during 2008. Wayport was once the clear leader in the hotspot builder market, with T-Mobile in the second position. Now, Wayport will be operating through a direct contract or management agreement over 18,000 hotspots in the U.S.; T-Mobile will likely be the second biggest with a couple thousand locations (Borders and FedEx/Kinko's tops among them). The No. 3 player is hard to figure. Panera?

I've been predicting for some time that media on the edge--music, videos, movies, and games stored on servers on the local Wi-Fi network--will be the next big development in venue-oriented Wi-Fi, with Starbucks likely far in the lead. Lowden wouldn't comment on any specific plans in the works, of course, but said generally, "Storing and caching all that content on the edge...hasn't been leveraged in the past, but it will be in the future to create a very unique experience." At Barnes & Noble, Wayport caches some multimedia data that's available to customers in the stores.

The advantage for in-store media storage is that you can leverage the speed of the local network, and add additional access points to distribute network load. The choke point is no longer the Internet connection, but local network speed. I expect--though Wayport, AT&T, and Starbucks haven't said it--that Starbucks infrastructure will be all 802.11n for this reason, likely with both 2.4 GHz and 5 GHz support for the best throughput in the higher-frequency band for media transactions. (In fact, I wouldn't be surprised if you could only buy movies via 5 GHz.)

Lowden also noted that the proliferation of mobile devices with Wi-Fi built in have led to them reaching out to venues that wouldn't have made sense for them to work with previously, and for unlikely candidates to reach out to them, too. Wayport is now working with a number of healthcare facilities that, while they have their own network infrastructure, wanted to outsource public access Wi-Fi (whether they choose to charge or underwrite it), and certain applications that they're not as experienced with running themselves.

A little history: In 2001 and again in 2004, the heat seemed to be on the public side of Wi-Fi: lots of money to be made, ostensibly, lots of partnerships and venues to be built, and an overcrowded supply of infrastructure builders. The year before, Wayport looked to be an also-ran in the hotspot provider business.

Despite being one of the earliest firms to put Ethernet and then Wi-Fi into hotels, and build out hotspots in airports; and despite their survival of the first hotspot meltdown in 2001 during the dotcom crash and brief venture capital shortage; and despite their early entrance into allowing wholesale pricing for hotspot aggregators; the firm seemed about to be eclipsed by apparently deep-pocketed Cometa (with AT&T, IBM, and Intel in various capital and support roles), Toshiba's mom-and-pop focused turnkey system, and T-Mobile, which had the Starbucks contract. What a difference a year makes.

Cometa, Toshiba, and Wayport contended for the contract to build out back-office and public-access service at McDonald's in the U.S., and Wayport won. Within a few weeks, Toshiba passed its few hundred locations to Cometa, which shut its doors in May 2004. Wayport, meanwhile, had cooked up a strategy for McDonald's that it announced later that month.

Their approach involved a fixed-rate charged for unlimited access by retail network partners for all the locations in their pool. This meant that partners had a fixed cost, instead of a per-session cost, and Wayport could obtain specific revenue even before usage by a partner ramped up. Wayport hasn't discussed the details of this arrangement in depth since, but has partnered with Sony with its Mylo, Nintendo with its DS game player, and ZipIt with its wireless messaging appliance.

The McDonald's deal also apparently gave Wayport a way to extend its work with SBC-later-AT&T; Wayport had earlier in 2004 became the managed-services contractor for SBC to build out The UPS Store/Mailboxes Etc. nationwide. (UPS dropped AT&T as its partner in mid-2007, although that didn't appear to have anything to do with Wayport's role.)

AT&T through Wayport developed its large resold/managed footprint that incorporated resale of Wayport's McDonald's locations with the UPS Store and a few hundred other managed locations, including a handful of airports. The Cingular acquisition of AT&T Wireless put more airports in SBC's hands, too. (SBC was once the 60 percent majority owner of Cingular; when SBC and BellSouth, the other owner, merged that put the newly rebranded AT&T in charge of Cingular which it relabeled as AT&T. Confusing, huh?)