The document discusses the cloud and its consequences for different groups. The cloud refers to storing and accessing data and services via the internet instead of local servers or personal devices. Key points include: - The cloud provides optimizations like moving costs from capital expenditures to operating expenditures. It also reduces capacity planning needs and makes it easier to compete technologically. - For users, the cloud means data is accessible from anywhere but also controlled by third parties. For decision-makers, it impacts costs and tax implications. For IT workers, it may eliminate some jobs but creates new roles like DevOps. - Architects must design for security, resilience, scalability and continuous updates in the cloud. Developers have more deployment ease but

1. Cloud
Karim Jouini – CEO Expensya.com

2. Who is Who ?
Introductions
2

3. What is the Cloud / Why ?
u A mix of old and new concepts, mixed in a marketing term
« Cloud » (marketing, decision making)
A simple optimization story to begin with…
u A simple evolution that is becoming a game-changer!

4. Not one cloud, but a stack of clouds

5. Why is Cloud trending ?
u Volatile & low performant devices
u Increased IT complexity
u Higher performant networks (3G is a game changer)
u Hardware cost is… negligeable!

6. Consequences of Cloud
u For users:
u Your data is everywhere
u Your data is stored (and « owned »?) by
third parties.
u You can throw your iPhone from the
window, your data is safe
u Wait don’t do it!!
6

7. Consequences of Cloud
u For decision makers (CEO, CTO):
u Moves Capex to Opex (can have tax
consequences…)
u Cost of entry and cost of exit driven down.
u Reduced capacity planning
u Easier to compete on tech

8. Consequences of Cloud
u For IT/Ops
u Jobless J
u A new job appears: DevOps

9. Consequences of Cloud
u For architects:
u Strong design requirements:
u Secure by design
u Resilient by design
u Scalable by design
u Fresh by design
u All updates are available
u More $$

10. Consequences of Cloud
u For devs
u Harder to code against
u Easier deployment and management
u More responsability (DevOps)
u Easier to test (setting up a test env takes
minutes)
u More $$

11. Consequences of Cloud
u For governments
u Slowly losing independence and data-control
u Tax evasion
u Destroys IT jobs
u Inability to compete
u Scale is important
u Energy cost is key: 80% of storage cost is
electricity
u The US has the cheapest electricity! 11

12. Big Data
Very very big data
12

13. 13

14. 14Karim.jouini@expensya.com