April 2009
Intermediate to advanced
204 pages
6h 58m
English
Content preview from Cloud Application Architectures
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The Value of Cloud Computing
How far can you take all of this?
If you can deploy all of your custom-built software systems on cloud hardware and leverage SaaS systems for your packaged software, you might be able to achieve an all-cloud IT infrastructure. Table 1-1 lists the components of the typical small- or medium-sized business.
Table 1-1. The old IT infrastructure versus the cloud
Traditional | Cloud |
File server | Google Docs |
MS Outlook, Apple Mail | Gmail, Yahoo!, MSN |
SAP CRM/Oracle CRM/Siebel | SalesForce.com |
Quicken/Oracle Financials | Intacct/NetSuite |
Microsoft Office/Lotus Notes | Google Apps |
Stellent | Valtira |
Off-site backup | Amazon S3 |
Server, racks, and firewall | Amazon EC2, GoGrid, Mosso |
The potential impact of the cloud is significant. For some organizations—particularly small- to medium-sized businesses—it makes it possible to never again purchase a server or own any software licenses. In other words, all of these worries diminish greatly or disappear altogether:
Am I current on all my software licenses? SaaS systems and software with cloud-friendly licensing simply charge your credit card for what you use.
When do I schedule my next software upgrade? SaaS vendors perform the upgrades for you; you rarely even know what version you are using.
What do I do when a piece of hardware fails at 3 a.m.? Cloud infrastructure management tools are capable of automating even the most traumatic disaster recovery policies.
How do I manage my technology assets? When you are in the cloud, you have fewer technology assets ...
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