Enterprise Computing Models (ppt)

basheddockDéveloppement de logiciels

21 févr. 2014 (il y a 3 années et 6 mois)

115 vue(s)



Summary of Enterprise
Computing Models



Enterprise Dimensions


Who does what?


In
-
source out
-
source hardware and software


Staff vs. consultant


What does the software and hardware
landscape look like?


Monolithic (SAP R3)


Service
-
based


SaaS



Infrastructure Options

(Who Does What)


In
-
house sole source (SAP) (ORACLE)
(PEOPLESOFT)


Multi
-
vendor solutions


Out of building infrastructure


The cloud (SALESFORCE)



And a mix of the above…




In
-
house Implementations


The company provides care
-
and
-
feeding of
their ERP systems


Requires significant expertise and long
-
term
investment


Without expertise and upper
-
management
commitment, this will not work!




Multi
-
vendor Solutions


One
-
size fits
-
all is not always enough


Adoption of SalesForce.com by companies are
on the rise


Third
-
party front
-
end integration engines


Duet, ERP connect


Challenges


Authoritative data?


Integration and migration


Reintroduce the age old silo problem?




Out of Building Infrastructure


Activities are performed by third
-
party
providers


Consultants


Hosting / licenses


Application service providers


And all of this in the
clould




Enterprise Dimensions
(Software Landscape)


Monolithic ERP


External integration systems


SaaS


PaaS


IaaS



These topologies are not mutually exclusive




Enterprise Dimensions

(
SaaS
)


Software as a Service


We are talking about the Salesforce.com “on
-
demand” software platforms. TurboTax online
is a good personal example


Pricing is subscription
-
based


They are multi
-
tenant


SAP offers
ByDesign

as a Web
-
based pay
-
as
-
you
-
go platform




Enterprise Dimensions

(
SaaS
)



Enterprise Dimensions

(
PaaS
)


Platform as a Service


It’s a means of provisioning hardware and the
applications that run on the hardware


A solution stack


I can purchase an SQL
Server instance from
http://
www.rackspace.com/managed_hosting


Azure fits this mold




Enterprise Dimensions

(
PaaS
)



Enterprise Dimensions

(
IaaS
)


Infrastructure as a Service


Formally define, this is a more “raw” service


I give you a VM to do with as you please


You need to take care of the software
ecosystem and
licences



Again, Rackspace offers these services



Enterprise Dimensions

(
IaaS
)



From
WikipediA



And the Cloud?


In summary, the cloud implies the use of
dynamically allocated resources instead of
statically allocated resources


I’m no longer provisioned a VM or physical
resource, I’m provisioned


Compute power / disk / bandwidth on a pay
-
as
-
you
-
go basis


Amazon / Rackspace / and many others



Cloud (Types)


We often categorize clouds as


Public: Resources are offered as a pay
-
per
-
use
service over the Internet


Private: Resources are hidden behind a firewall
and managed by the organization



Cloud Drivers




Cloud Drivers


From http://www.sei.cmu.edu/reports/10tn009.pdf



Cloud Barriers


From http://www.sei.cmu.edu/reports/10tn009.pdf



Guidelines


So how do we build our enterprise
architecture?


We won’t answer this question today



Decision Factors


Make vs. buy


Choice of vendor or technology


Internal staff vs. consultants


Hardware in or out of the cloud




AND NOW ON TO THE ERP
SYSTEMS THEMSELVES



Market Share



(Short) List of SAP users

http
://
global.cmich.edu/programs/content/mba/Compan
iesWhoUseSAP.pdf


Same say 97% of S & P companies use SAP in some
way

Some say it runs international business





Costs to Implement (1)


License fees from $2000 to $5000 per year


Maintenance fees are about 15%
-

20% of
license fees


Internal solutions tend to be more expensive
than cloud
-
based solutions



Costs to Implement (2)


Assume $3000 / user and a 50 concurrent
user company


License cost is $150,000


Maintenance cost is 18% of license costs


Consulting 1.2:1 consulting / license costs


Internal costs 1:1 license costs



Costs to Implement (3)



Costs (SAP
ByDesign
)



Costs (
Salesforece
)


http://
www.salesforce.com/crm/editions
-
pricing.jsp




BIG DATA


WHAT IS BIG DATA?



Big Data (Characteristics)


This is our enterprise data warehouse fed by


Transactional systems


External systems


Unstructured data




Big Data (Options)


Hadoop

and the
Hadoop

Distributed File
System (HDFS)


SAP HANA