This document discusses how cloud computing provides a more sustainable IT model compared to on-premise systems. It notes that multi-tenant cloud architectures allow for massive economies of scale and more efficient use of resources, resulting in significantly lower carbon emissions per transaction compared to traditional on-premise systems. Specific benefits highlighted include increased server utilization rates, standardized architectures requiring fewer servers, and the ability to continuously analyze and improve platforms. Real-world carbon savings of up to 95% for customers moving applications to the cloud are cited.

1. Clouds and Sustainable Computing:
Massive Scale for a Shrinking World
Peter Coffee
VP & Head of Platform Research
salesforce.com inc.

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3. On-premise IT systems have heavy CO2 footprints…
Carbon Emissions
5.6 4.0 1.1
grams/ CO2e per grams/ CO2e per grams/ CO2e per
computer transaction computer transaction computer transaction
Small Medium Large
Power
Business Business Business
…but in today’s world of connected people and processes,
benefits of on-premise model are called into question

4. Multi-Tenancy Makes the Cloud Transforming
Single-Tenant Multi-Tenant
(On-Premise or ‘Outsourced’)
Dedicated IT ‘Stack’ for Every One Shared Stack
Application: Inefficient, Anywhere for All Applications

5. Multitenancy is a More Efficient Technology
Multitenant Code and Architecture
Metadata Layer
Massive Economies of Scale:
More Than 100,000 Customers
Optimized Highly Predictable Continual
Processing Efficient Load Analysis & Rich Customizability:
& Storage Provisioning Balancing Improvement
Usable at Any Size
Energy-
Micro-energy
Optimized
Standardized
Higher Server Utilization
efficient Power
Management Architecture
Servers Consumption Fewer Servers
Physical Layer

6. Cloud Computing:
Most Sustainable IT Model in the World
Energy Efficiency Comparison:
Transactions, not Cycles or Servers
On-Premise
Carbon Footprint
(g. CO2 / transaction) ‘Private Cloud’
95% 64%
lower lower
carbon carbon
intensity intensity
green.salesforce.com
*Estimated avoided carbon emissions from salesforce.com customers running applications on the multi-tenant cloud
as opposed to running on-premise servers. Actual carbon emissions savings could vary. Based on WSP comparison
model and research commissioned by salesforce.com, March 2011.

7. When the Going Gets Tough,
the Tough Get Cloudy
100,000+
Customers
36 Billion Transactions per quarter

8. Peter Coffee
VP / Head of Platform Research
pcoffee@salesforce.com Q&A?
facebook.com/peter.coffee
twitter.com/petercoffee
cloudblog.salesforce.com