presentation on cloud - internet reengineering? at cloud computing symposium, as part of acm bangalore compute 2009 conference, by venki nishtala, Rediff

1. Cloud Computing
Internet
Re-
Re-engineering
Venki Nishtala
Rediff.com India Ltd

2. Internet – a review
• Behind the Web,
• An interconnection of telcos’ ISPs
• CDNs – public and private help distribute
content from the edge of the Internet
• Major portals use a combination of public
and private CDNs
• Portals and CDNs use multilateral network
peering relationships

3. The new elements
1.0 Hardware as Service:
On demand storage and VMs – Amazon’s S3
& EC2
2.0 Platform as Service:
SimpleDB – Relational DB
Map-Reduce and Big Table – big step

4. The Agile Cloud
• No more versioning , from here on, a
continuous evolution
• Powerset and facebook were early
adopters
• Salesforce.com sets the trend for
established businesses
• Specialized outsourced and new services
(for ex. speech recog.) can leverage cost
advantages
• for others, some work to do…

5. Determinants
Business:
• Capital expenditure
• Operating Expenses
– bandwidth, IT (ops) manpower
• Service migration strategies
Product Engineering: (from a web biz pov)
– Minimalization with real-time global
collaboration (see world.rediff.com)

6. Inter-cloud backbone
Service migration would need a heterogenity
of cloud services – ranging from hardware
as a service(ec2), platform(bigtable) to
complete systems (for ex. salesforce)
therefore, interconnection (peering)
between clouds will be needed
Peering will still happen through telco
backbones
Incumbent advantage for a web business?

7. Determinants..contd
Bandwidth costs in cloud by data transfer
volumes
suitable for smaller businesses with local
operations
peering relationships will be needed with
web-scale apps to compete with CDNs

8. Network services
• Cloud are still a collection of machines
(VMs) in a single autonomous system – the
cloud’s AS number(s)
• A large & autonomous app cloud would need
network peering to maintain cost
efficiencies in addition to hardware and
power savings on storage
• Provisioning of manageable network
services is key to consolidation

9. Virtualization & Data
Security
Data retention:
In most cases a VM reset ensures delinking of data
blocks, sufficient for most cases
Sensitive data may need encryption unless physical
zero’ing with delinking is assured by VMs
Security issues allow no tradeoffs, but increased
costs may be offset by improved server
efficiencies and lower unit cost of computing?
Virtual user contexts on servers and session
management will present newer challenges of
privacy and security