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Chris Sears  
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 More options Oct 27 2008, 1:49 pm
From: "Chris Sears" <cse...@gmail.com>
Date: Mon, 27 Oct 2008 13:49:21 -0400
Local: Mon, Oct 27 2008 1:49 pm
Subject: Microsoft Azure announced at PDC

Microsoft announced their cloud offering at PDC this morning. The keynote
was quite light on specifics, but Azure sounds like it's a roll-up of many
Microsoft hosted and cloud-ish products/services already available today
(Online Services, Dynamics CRM, Live Mesh, SQL Server Data Services) and
some new stuff.

The new stuff is what's interesting. Microsoft seems to be doing what
they've done in the past when they play catch-up in a market... go beyond
the basic features offered by competitors (ie AWS) in ways that make things
more enterprise friendly and leverages their extensive base of developers to
quickly gain market share. They made several references to hosting VMs as
part of Azure (code named Red Dog, ala EC2), but that was never a focus.
Instead, they chose to talk about how you could interoperate with partners,
federate identities between your internal AD and the Cloud, model your
application into roles that includes work flows, all using Visual Studio and
XML... and oh yeah there are VMs running in there somewhere, but who cares
about that?

Production pricing was never brought up. They'll be rolling out parts of
Azure in phases over the next few weeks that will be available to CTP
testers for free. http://www.microsoft.com/azure/default.mspx

Overall it was pretty much what you would expect. Definitely Microsoft's
style. Some good... takes inspiration from AWS, uses XML and REST, open to
competition at various levels of the stack. Some not so good... awkward
marketing, many parts don't really fit well under one umbrella, feels a bit
too grandiose.

I expect more real details to emerge later today. Any other first
impressions?

 - Chris


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Forrest Crowell  
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 More options Oct 27 2008, 2:09 pm
From: "Forrest Crowell" <forrest.crow...@gmail.com>
Date: Mon, 27 Oct 2008 11:09:18 -0700
Local: Mon, Oct 27 2008 2:09 pm
Subject: Re: Microsoft Azure announced at PDC

Yes, it was a bit of one-click to world peace.
Big pluses:  Federated Identity. Test on virtual cloud emulator running at
offline dev system.
Uncertain:  Storage model.  Is it only via Live Services?
MS marketing: You already know how to code it.  (Emphasized multiple times
by every speaker.)

-- Forrest


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Steve Bjorg  
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 More options Oct 27 2008, 2:15 pm
From: Steve Bjorg <ste...@mindtouch.com>
Date: Mon, 27 Oct 2008 11:15:41 -0700
Local: Mon, Oct 27 2008 2:15 pm
Subject: Re: Microsoft Azure announced at PDC

Unless pricing is revealed, this is just a non-event.  Scaling is  
about cost.  That was the big schtik with EC2: pay by the hour.  Or  
S3: pay by the GB/mt.  Super simple to understand.

Unless their storage API is S3 compatible,  I don't see us moving  
1,000,000+ object from AWS to ASP (I mean Azure Service Platform, not  
Active Server Pages; this one is going to create some confusion no  
doubt) if we have to also change the API.

Just curious, am I the only one who considers parity with the AWS API  
a must to switch?  What other factors should be considered?

- Steve

--------------
Steve G. Bjorg
http://wiki.mindtouch.com
http://twitter.com/bjorg

On Oct 27, 2008, at 10:49 AM, Chris Sears wrote:


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Chris Marino  
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 More options Oct 27 2008, 2:57 pm
From: "Chris Marino" <ch...@snaplogic.com>
Date: Mon, 27 Oct 2008 11:57:01 -0700
Local: Mon, Oct 27 2008 2:57 pm
Subject: RE: Microsoft Azure announced at PDC

Steve, not sure I agree with your assessment here at all....

I didn't see the whole presentation, but I thought I heard Ray Ozzy say
that they would be 'market priced', which I take as being within 2x of
the whatever else is out there.  Second, I do see this as a big deal
because there are so many MSFT developers.  Compare your average
VB/Studio developer to the skills necessary to run something on EC2?
This suddenly makes the cloud available to them.  

IMHO, I think the workflow and federated identity are a pretty big deal
too. Their both a F'ing pain in the neck and often what limits using
distributed services except for only the most rudimentary things....

CM


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Tarry Singh  
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 More options Oct 27 2008, 3:12 pm
From: "Tarry Singh" <tarry.si...@gmail.com>
Date: Mon, 27 Oct 2008 20:12:09 +0100
Local: Mon, Oct 27 2008 3:12 pm
Subject: Re: Microsoft Azure announced at PDC

I agree with both here. MSFT's play is crucial but if the offerings are not
translated i easy-2-understand terms, you might really lose that
increasingly flattened mass consumerspace, which is what the whole CC is all
about.

BTW: Wwhat does Azure mean anyways?

--
Kind Regards,

Tarry Singh
______________________________________________________________
Founder, Avastu: Research-Analysis-Ideation
"Do something with your ideas!"
http://www.avastu.com
Business Cell: +31630617633
Private Cell: +31629159400
LinkedIn: http://www.linkedin.com/in/tarrysingh
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Steve Bjorg  
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 More options Oct 27 2008, 3:21 pm
From: Steve Bjorg <ste...@mindtouch.com>
Date: Mon, 27 Oct 2008 12:21:38 -0700
Local: Mon, Oct 27 2008 3:21 pm
Subject: Re: Microsoft Azure announced at PDC

Chris,

As you already know, Windows servers are now also available on EC2.  
Did yo check the prices?  SQL server costs up to $3.20/hr.  For .NET/
ASP.NET apps, Mono runs quite nicely on Linux as well, giving a good  
target environment without the Microsoft tax.  Of course, you can  
forget about SQL services, SharePoint services, etc.  I guess it  
depends on your needs.  In that regard, nowhere did it say that the  
traditional Microsoft server-based programming model would be the same  
on Azure.  My guess is it will require quite a bit of mental rewiring  
to take advantage off, but let's argue that once more details emerge. :)

You're absolutely right on the federated identity stuff.  That is a  
pain.  I would guess that Azure will only federate with MS servers  
though, which will be limiting.

I guess, I'm coming from the standpoint that (a) I want to be able to  
use whatever is most cost-effective and (b) want to be able to switch  
to another providing if it makes senses economically.  In other words,  
I the want the cloud to be like car insurance: 15 minutes of research  
can save you 15% on your cloud bill! :)  For that to work, we need  
uniform APIs though.

- Steve

--------------
Steve G. Bjorg
http://wiki.mindtouch.com
http://twitter.com/bjorg

On Oct 27, 2008, at 11:57 AM, Chris Marino wrote:


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Steve Bjorg  
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 More options Oct 27 2008, 3:35 pm
From: Steve Bjorg <ste...@mindtouch.com>
Date: Mon, 27 Oct 2008 12:35:42 -0700
Local: Mon, Oct 27 2008 3:35 pm
Subject: Re: Microsoft Azure announced at PDC

Azure is a color name that is often used to describe the color of a  
cloudless sky.

- Steve

--------------
Steve G. Bjorg
http://wiki.mindtouch.com
http://twitter.com/bjorg

On Oct 27, 2008, at 12:12 PM, Tarry Singh wrote:


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Simon Plant  
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 More options Oct 27 2008, 3:42 pm
From: "Simon Plant" <si.pl...@gmail.com>
Date: Mon, 27 Oct 2008 19:42:51 +0000
Local: Mon, Oct 27 2008 3:42 pm
Subject: Re: Microsoft Azure announced at PDC

Azure is the correct name for the 'sky blue' color (http://en.wikipedia.com/wiki/sky_blue).

http://www.microsofr.com/azure/

Interestingly, according to computer world, Microsoft has so far omitted to trademark Windows Azure and Azure Services Platform.

Simon


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Chris Marino  
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 More options Oct 27 2008, 4:08 pm
From: "Chris Marino" <ch...@snaplogic.com>
Date: Mon, 27 Oct 2008 13:08:06 -0700
Local: Mon, Oct 27 2008 4:08 pm
Subject: RE: Microsoft Azure announced at PDC

OK. You could be right about the pricing model. Non starter for lots of
EC2 users.  But then again, as I've said before, I think EC2 pricing is
insanely low....

But you also have to remember that I can go to Fry's and by a TB for
about $140 (AWS EBS), but getting that from NetApp (Azure) is going to
be a little harder.  One is not a substitute for the other.....

CM


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Jim Starkey  
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 More options Oct 27 2008, 4:10 pm
From: Jim Starkey <jstar...@nimbusdb.com>
Date: Mon, 27 Oct 2008 16:10:52 -0400
Local: Mon, Oct 27 2008 4:10 pm
Subject: Re: Microsoft Azure announced at PDC

Their focus, like Google's, seems to be on running "applications in the
cloud" rather than "virtual machines in the cloud".   This is a deeper
and longer range view than Amazon's.

Ozzie doesn't play catch up, ever.  He plays to jump ahead.  Deploying
an infrastructure that can host arbitrarily scalable applications built
from extant tools is a brilliant strategy (if they can pull it off, of
course).  I'd be surprised if they did anything as crude as exposing raw
virtual machines.  Microsoft will never try to be the low cost provider
in a commodity market place.  Either they have added value that
justifies a premium, find another way to kill the competition (harder to
do with every anti-trust agency in the world looking over their
shoulders), or find another line of work.

--
Jim Starkey
President, NimbusDB, Inc.
978 526-1376


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Krishna Sankar (ksankar)  
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 More options Oct 27 2008, 8:42 pm
From: "Krishna Sankar (ksankar)" <ksan...@cisco.com>
Date: Mon, 27 Oct 2008 17:42:50 -0700
Local: Mon, Oct 27 2008 8:42 pm
Subject: RE: Microsoft Azure announced at PDC
Jim,
        They have a raw mode for exposing the bare metal - most probably
at the VM level. They also said that in that mode, their availability,
health maintenance et al are off. Need o see the details, of course.
Cheers
<k/>


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jwpegler  
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 More options Oct 27 2008, 8:44 pm
From: jwpegler <jwpeg...@yahoo.com>
Date: Mon, 27 Oct 2008 17:44:05 -0700
Local: Mon, Oct 27 2008 8:44 pm
Subject: RE: Microsoft Azure announced at PDC

They probably paid a marketing firm $100k to come up with that name.


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Discussion subject changed to "parity with the AWS API" by Alan Williamson (AW1)
Alan Williamson (AW1)  
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 More options Oct 28 2008, 5:18 am
From: "Alan Williamson (AW1)" <a...@aw20.co.uk>
Date: Tue, 28 Oct 2008 09:18:07 +0000
Local: Tues, Oct 28 2008 5:18 am
Subject: parity with the AWS API

Steve Bjorg wrote:
> Just curious, am I the only one who considers parity with the AWS API a
> must to switch?  What other factors should be considered?

I agree, however I do feel what we will see is not dissimilar to what a
"gateway" did in the old network protocol days.  We will see classes or
client libraries that abstract services and distill them down to one.

We are seeing this already from the likes of RightScale who have a
uniform interface to various cloud base providers.

Being primarily a Java shop, we are working on Java classes for uniform
access.

We've released a number of already, but will be releasing our Storage
API that spans over 4 different providers with the user not needing to
worry about the logistics.   This way the developer can simply get on
with embedded S3/Nirvanix/Mosso/FileSpace into their app without having
to worry about the heavy lifting or needing to replumb their code.

--
AW2.0 Ltd - The Cloud Experts
  web   http://www.aw20.co.uk/
  blog  http://www.aw20.co.uk/news.cfm


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Discussion subject changed to "Microsoft Azure announced at PDC" by Alan Williamson (AW1)
Alan Williamson (AW1)  
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 More options Oct 28 2008, 6:54 am
From: "Alan Williamson (AW1)" <a...@aw20.co.uk>
Date: Tue, 28 Oct 2008 10:54:41 +0000
Local: Tues, Oct 28 2008 6:54 am
Subject: Re: Microsoft Azure announced at PDC

Chris Sears wrote:
> I expect more real details to emerge later today. Any other first
> impressions?

I have gone through their whitepaper in detail and I have to confess to
liking what they are offering.   I took some notes as i went through the
whitepaper and compiled them here in an easy digestable bullet point form:

    http://alan.blog-city.com/azure.htm

We have a lot of experience in .NET and Java; our BlueDragon is the only
CFML engine that runs on .NET natively (currently powering MySpace.com)
and we are excited by the fact we can potentially move BlueDragon.NET
onto Azure.

But definitely lots of plays here at work, need some time to settle down
and digest what it all really means.  Devil in the detail though, namely $$$

--
AW2.0 Ltd - The Cloud Experts
  web   http://www.aw20.co.uk/
  blog  http://www.aw20.co.uk/news.cfm


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Discussion subject changed to "parity with the AWS API" by Steve Bjorg
Steve Bjorg  
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 More options Oct 28 2008, 10:42 am
From: Steve Bjorg <ste...@mindtouch.com>
Date: Tue, 28 Oct 2008 07:42:11 -0700
Local: Tues, Oct 28 2008 10:42 am
Subject: Re: parity with the AWS API
I can see where you're coming from.  Is that the general consensus?  
Use classes as abstractions to various cloud API implementations?  Why  
not expect parity at the HTTP level like we do for browsers?  In the  
future, when someone hands us a URI to a storage provide, should we  
really expect to know a priori which dialect our app must speak to  
that endpoint?

- Steve

--------------
Steve G. Bjorg
http://wiki.mindtouch.com
http://twitter.com/bjorg

On Oct 28, 2008, at 2:18 AM, Alan Williamson (AW1) wrote:


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Discussion subject changed to "Microsoft Azure announced at PDC" by Alan Ho
Alan Ho  
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 More options Oct 28 2008, 11:02 am
From: Alan Ho <karlu...@yahoo.ca>
Date: Tue, 28 Oct 2008 08:02:58 -0700 (PDT)
Local: Tues, Oct 28 2008 11:02 am
Subject: Re: Microsoft Azure announced at PDC
I looked through the offering, and it is indeed really powerful. Listening from the video, their SQL service even offers data-warehousing ability. There are some interesting tenants that it shares with Google App Engine:

1. Computing model is stateless - this enables scale-out
2. State is maintained via externalized services

There is a nasty developments that will totally break this paradigm:

The network is not faster than disk (and by disk, I mean solid state drives). In the world of multi-core and solid-state drives, it makes a lot of sense to have the data and the processing live on the same box. I suppose this can be somewhat remedied via caching & replication, but it gets complicated (warming up the cache / cache invalidation / etc). I don't know if fast data access is necessary for most OLTP applications.

EC2 gives you a bit more flexibility. You can chose to use EBS or you can chose to use the local disk. The reality is, we will probably have to  switch to a different progamming model in the future. Who knows - Microsoft might introduce a MapReduce service takes care io intensive processing.

Regards,
Alan Ho

----- Original Message ----
From: Alan Williamson (AW1) <a...@aw20.co.uk>
To: cloud-computing@googlegroups.com
Sent: Tuesday, October 28, 2008 3:54:41 AM
Subject: Re: Microsoft Azure announced at PDC

Chris Sears wrote:
> I expect more real details to emerge later today. Any other first
> impressions?

I have gone through their whitepaper in detail and I have to confess to
liking what they are offering.   I took some notes as i went through the
whitepaper and compiled them here in an easy digestable bullet point form:

    http://alan.blog-city.com/azure.htm

We have a lot of experience in .NET and Java; our BlueDragon is the only
CFML engine that runs on .NET natively (currently powering MySpace.com)
and we are excited by the fact we can potentially move BlueDragon.NET
onto Azure.

But definitely lots of plays here at work, need some time to settle down
and digest what it all really means.  Devil in the detail though, namely $$$

--
AW2.0 Ltd - The Cloud Experts
  web  http://www.aw20.co.uk/
  blog  http://www.aw20.co.uk/news.cfm

      __________________________________________________________________
Yahoo! Canada Toolbar: Search from anywhere on the web, and bookmark your favourite sites. Download it now at
http://ca.toolbar.yahoo.com.


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Discussion subject changed to "parity with the AWS API" by Ray Nugent
Ray Nugent  
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 More options Oct 28 2008, 11:12 am
From: Ray Nugent <rnug...@yahoo.com>
Date: Tue, 28 Oct 2008 08:12:21 -0700 (PDT)
Local: Tues, Oct 28 2008 11:12 am
Subject: Re: parity with the AWS API

You can expect it but you might be waiting a looooooong time. Using a Java abstraction layer will work but will be fragile unless it's data driven. Trying to keep up with the myriad changes from numerous vendors will be tough otherwise.

________________________________
From: Steve Bjorg <ste...@mindtouch.com>
To: cloud-computing@googlegroups.com
Sent: Tuesday, October 28, 2008 7:42:11 AM
Subject: Re: parity with the AWS API

I can see where you're coming from.  Is that the general consensus?  
Use classes as abstractions to various cloud API implementations?  Why  
not expect parity at the HTTP level like we do for browsers?  In the  
future, when someone hands us a URI to a storage provide, should we  
really expect to know a priori which dialect our app must speak to  
that endpoint?

- Steve

--------------
Steve G. Bjorg
http://wiki.mindtouch.com
http://twitter.com/bjorg

On Oct 28, 2008, at 2:18 AM, Alan Williamson (AW1) wrote:


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Discussion subject changed to "Microsoft Azure announced at PDC" by Steve Bjorg
Steve Bjorg  
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 More options Oct 28 2008, 11:35 am
From: Steve Bjorg <ste...@mindtouch.com>
Date: Tue, 28 Oct 2008 08:35:07 -0700
Local: Tues, Oct 28 2008 11:35 am
Subject: Re: Microsoft Azure announced at PDC
What is your app relies on third-party tools for image manipulation or  
pdf rendering?  With EC2 you can run anything you like, while GAE and  
Azure limit you to what is made available by the provider.  Think of  
all the wonderful open source tools that you won't be able to use.  I  
hope this can be addressed sooner than later.

I'm still betting on EC2 for now as the cloud platform of choice.  
RightScale is providing a nice dashboard into it.  And since AWS is an  
open ecosystem, we can expect a healthy amount of competition which  
will keep RightScale prices and features growing nicely.  If you think  
about it, this is very similar to the PC revolution where the open  
platform evolved much faster than the closed platforms of the day.  
Will history repeat itself?

- Steve

--------------
Steve G. Bjorg
http://wiki.mindtouch.com
http://twitter.com/bjorg

On Oct 28, 2008, at 8:02 AM, Alan Ho wrote:


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Discussion subject changed to "parity with the AWS API" by Ben Bloch
Ben Bloch  
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 More options Oct 28 2008, 11:46 am
From: "Ben Bloch" <ben.bl...@verizon.net>
Date: Tue, 28 Oct 2008 11:46:23 -0400
Local: Tues, Oct 28 2008 11:46 am
Subject: RE: parity with the AWS API
I'd also like to see an abstraction not tied to a particular language but
rather to a ubiquitous protocol - like HTTP - perhaps something along the
lines of Atom/AP. In this way, java, .Net, Ruby, etc developers can access
it.  

And then of course each dialect-provider could do their own implementations
and wrappers.

- Ben


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andre.merzky  
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 More options Oct 28 2008, 11:50 am
From: "andre.merzky" <andremer...@gmail.com>
Date: Tue, 28 Oct 2008 08:50:10 -0700 (PDT)
Local: Tues, Oct 28 2008 11:50 am
Subject: Re: parity with the AWS API

"The nice thing about standards is that there are so many to choose
from." (Andrew Tanenbaum)

But really, expecting parity on HTML/REST/WSDL/XYZ level boils down to
standardization.  That will take time.  As Ray says, looooooong time.
Meanwhile, classes and libraries abstracting the most common patterns
is a very sensible thing to do, and certainly can provide a useful
seed for later standardization.

On Oct 28, 4:12 pm, Ray Nugent <rnug...@yahoo.com> wrote:


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Pedro Navarro  
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 More options Oct 28 2008, 12:02 pm
From: "Pedro Navarro" <pnava...@abiquo.com>
Date: Tue, 28 Oct 2008 17:02:13 +0100
Local: Tues, Oct 28 2008 12:02 pm
Subject: Re: parity with the AWS API

I strongly believe that WS-management is the perfect mixture between REST
and WSDL.

2008/10/28 andre.merzky <andremer...@gmail.com>


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Discussion subject changed to "Microsoft Azure announced at PDC" by Sriram Krishnan
Sriram Krishnan  
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 More options Oct 31 2008, 2:08 am
From: Sriram Krishnan <m...@sriramkrishnan.com>
Date: Thu, 30 Oct 2008 23:08:05 -0700
Local: Fri, Oct 31 2008 2:08 am
Subject: Re: Microsoft Azure announced at PDC
Long time lurker - it is great to finally be able to speak in public.  
My apologies for jumping into this thread so late - I just came back  
from PDC.

On Oct 28, 2008, at 8:02 AM, Alan Ho wrote:

> EC2 gives you a bit more flexibility. You can chose to use EBS or  
> you can chose to use the local disk. The reality is, we will  
> probably have to  switch to a different progamming model in the  
> future. Who knows - Microsoft might introduce a MapReduce service  
> takes care io intensive processing.

You can use local disk with Windows Azure too. For folks playing with  
the SDK, just add a LocalStorage element in the config file and use  
the RoleManager class to get to the path you should be writing to.  
Since this is local disk, we recommend that people use this for  
ephemeral/cache/scratch data since it can disappear (since it isn't  
replicated, etc, etc).

I also see a lot of questions around the stateless programming model.  
Yes, this is the pattern and template we're pushing at PDC. However,  
this is just one example of a Windows Azure service model or rather,  
the specific service model we're exposing at PDC. If you saw the  
keynote or Yousef Khalidi's talk or Erick Smith's talk at PDC (the  
videos should be up on channel9.msdn.com or will be up soon), you'll  
see that we can construct complex service models for you to model your  
service at a higher abstraction level. Over time, we'll definitely be  
opening up more of these service modelling capabilities. We use this  
stuff everyday - our storage service itself runs on one of these  
service models.

--
Sriram Krishnan
www.sriramkrishnan.com


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Sriram Krishnan  
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 More options Oct 31 2008, 2:10 am
From: Sriram Krishnan <m...@sriramkrishnan.com>
Date: Thu, 30 Oct 2008 23:10:56 -0700
Local: Fri, Oct 31 2008 2:10 am
Subject: Re: Microsoft Azure announced at PDC

On Oct 28, 2008, at 8:35 AM, Steve Bjorg wrote:

> What is your app relies on third-party tools for image manipulation or
> pdf rendering?  With EC2 you can run anything you like, while GAE and
> Azure limit you to what is made available by the provider.  Think of
> all the wonderful open source tools that you won't be able to use.  I
> hope this can be addressed sooner than later.

As far as third party libraries go, any .NET code that can run on  
medium trust can work today (and you have a ton of PDF and image  
manipulation libs to choose from in .NET - open source as well as  
others :) ). We have committed to having native code support in 2009  
so pretty much any of these should just work.

--
Sriram Krishnan
www.sriramkrishnan.com
Windows Azure


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Steve Bjorg  
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 More options Oct 31 2008, 1:15 pm
From: Steve Bjorg <ste...@mindtouch.com>
Date: Fri, 31 Oct 2008 10:15:12 -0700
Local: Fri, Oct 31 2008 1:15 pm
Subject: Re: [CCG] Re: Microsoft Azure announced at PDC
Hey Sriram,

Woot... welcome! :)

Please continue dispel any misinformation.  It's good to have an MS-
insider voice readily available... Hope Azure can become a viable  
alternative to EC2... both in capabilities and price performance.  
Competition is good! :)

Keep us in the loop about the roll out.

Cheers,

- Steve

--------------
Steve G. Bjorg
http://wiki.mindtouch.com
http://twitter.com/bjorg

On Oct 30, 2008, at 11:10 PM, Sriram Krishnan wrote:


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Discussion subject changed to "parity with the AWS API" by Bill de hOra
Bill de hOra  
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 More options Nov 1 2008, 9:08 am
From: Bill de hOra <b...@dehora.net>
Date: Sat, 01 Nov 2008 13:08:21 +0000
Local: Sat, Nov 1 2008 9:08 am
Subject: Re: parity with the AWS API

Ben Bloch wrote:
> I'd also like to see an abstraction not tied to a particular language but
> rather to a ubiquitous protocol - like HTTP - perhaps something along the
> lines of Atom/AP. In this way, java, .Net, Ruby, etc developers can access
> it.  

> And then of course each dialect-provider could do their own implementations
> and wrappers.

I'm fairly confident something like S3 can be based on AtomPub.

Fwiw, I think protocol incompatibility is an inconvenience. The real
lockins will be around data migration and metadata. Moving large volumes
of data from one provider to another will be hard to infeasible (by
large I mean hundreds of terabytes to petabytes) - I'm surprised no-one
seems to be talking about this as it drives an architecture that prefers
sending code to the data (the hadoop people seem to understand this very
well). Metadata is both a lockin and lockout option - lockin if the
protocol data doesn't expose all of it, and lockout if your new favoured
provider can't actually store it. The latter is why systems that can
support semi-structured/sparse metadata have an advantage over ones that
are squarely relational.

Bill


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