CLOUD COMPUTING FROM A SOFTWARE ENGINEERING PERSPECTIVE

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31 Οκτ 2013 (πριν από 3 χρόνια και 7 μήνες)

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CLOUD COMPUTING FROM A
SOFTWARE ENGINEERING
PERSPECTIVE


Danilo Ardagna,
Elisabetta

Di Nitto

{
ardagna,dinitto}@elet.polimi.it



What is Cloud Computing?


A coherent
,
large
-
scale
,
publicly




accessible

collection
of
compute,



storage
, and
networking
resources



Available via Web
service
calls



through the Internet



Short
-

or long
-
term
access
on a pay per use basis

Motivation for Cloud Computing


Internet
-
based service provisioning


Provision
is usually overestimated to
deal



with
usage peaks


Peaks
are rare and relatively short


Estimates
indicate that data centers only



use about 10
-
15% of their
capacity



Over
-
provisioning is expensive


Electricity
and cooling costs for low demand servers


High
personnel costs for managing and maintaining the physical
and hardware infrastructure

Motivation for Cloud Computing


Application deployment is non
-
trivial


Need
to configure hardware, OS, network
,
storage devices, and
install all the
required
application software
(
web server, application
server, DBMS)



Global
financial crisis


Cloud
computing as a cost
-
effective alternative to cut down IT costs

Motivation for Cloud Computing


Increasing market and public
interest


Merryl

Lynch estimates a cloud computing market
of
US
$160
billion

in
2011



Gartner
estimates

that

in 2011 75%
of

all
software

services

will
use

some

type
of

cloud

infrastructure

From the software engineering
perspective



An attractive
deployment and operation


solution



Cloud
computing offers specific
programming
features
that may influence the
way software
is
developed


Course objectives


Introduce
the concepts of
Cloud computing



Overview
existing
approaches and
techniques,



and provide
guidelines for
their
usage in all



phases
of software
lifecycle


Content overview


Introduction to Cloud Computing



Deploying
Infrastructure as a Service (
IaaS
)



Delivering
Platform as a Service (
PaaS
)



Relevant
Software as a Service (
SaaS
)
examples (
Google
and
Facebook)



Industrial seminars (we are inviting IBM, Microsoft,
GoGrid
)

Exam


Evaluation mainly based on
a
project



Groups: 4
-
5 graduate students,
possibly, supervised by a PhD
Student



Peer reviewed paper



Project presentation





Projects


We will ask
the industrial
speakers to propose
t
wo
-
three
projects



Projects proposed by us


Monitoring: extending
d

and j
-
Cloud


Deploying an application on IBM
IaaS

infrastructure and on
Amazon: what is the difference?


Data management in the Cloud


SOA
vs.
Cloud


QoS

specification at multiple level of

abstractions


Advanced
Cloud patterns



You can propose projects if you

wish!



Course schedule



Lectures in May, from May 2
nd

to May 30
th



Monday 14.30
-
16.00


Wednesday 14.30
-
16.00


Last lecture June the 11
th

14.30
-
16.00


Schedule of lectures is sharp (academic quarters already counted
in the schedule)!



Projects will be assigned by the end of the second week
of course (but the sooner the better)


Project papers to be submitted by June 11
th



Review process between June 12
th

and June 26
th



Final project presentations and evaluations by the first
half of July

Any questions?