The CIO‘s ESA Brief
In a nutshell: The Essentials of SOA and ESA
and why you need to rely on it
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ESA or not ESA, that is the
Question
Whether it is nobler in the mind to suffer the slings and
arrows of outragous fortune or to take arms against a
sea of troubles
and by opposing end them.
[W. Shakespeare: Hamlet, Prince of Denmark]
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Abstract
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Enable a CIO to judge the risks and chances
Automation with SOA is not rocket science
SOA will soon prove inevitable for any IT
SAP’s ESA steers away from the “big bang”
SAP ESA is a mature framework for EAI
Allows a step-by-step migration
Benefit from 20 years of EAI experience
Learn business cases for agile ESA adoption
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What Is SOA?
SOA Transforms software applications into
services that that external applications can
reuse by provision of common communications
standards and demanding applications to
deliver functionality as reusable services.
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The Era Before SOA
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Today
Wildly grown application hybrids
Redundant development of applications
Inaccisible data sources
Object oriented Architecture
Develop reusable modules
SOA
Common interface standards
Common communication standards
Reusable public services
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The Promised Wins of ESA
SOA will not only eliminate redundancy but also
dramatically enhance data quality, accelerate data
discovery and allow for innovative customer services.
Ergo: save money and have a better sleep!
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An Analogy: Communities
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Communities benefit from public services
One road is built for many houses
•Holes for water, phone, electricity digged only once
Traffic rules are compliant
•Continent drives right, commonwealth left ...
Vehicles are built with compatible technology
•E.g. petrol, tire sizes
Vehicles are operated analogously
•Airplanes are steered with wired rudders
•some gocarts with pedals but
•automobiles are controlled by a steering wheel everywhere
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An Analogy: IT habitats
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IT habitats benefit from enterprise services
One compatible execution runtime
•Programming language compiles to J2EE, .NET, ABAP
Service interfaces are compliant
•WSDL etc. expose interface for easy discovery ...
API access is built with interchangeable technology
•E.g. DB is accessed via open SQL or ODBC
•Services are transported via HTTP etc.
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Business Cases
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Streamlining Data Flows and Interfaces
Using fewer technology variants
•Enhancing data quality, Optimizing ressources
Business Activity Monitoring (BAM)
Real-time discovery of decision support
Process Automation
Workflow of repetitive tasks
Eliminate multiple data entry „print-to-type“
Innovation
Establish new web-based businesses („eBay“ ..)
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Consolidation of Interfaces
Current landscapes are dominated by wildly
grown and loosely coupled interface activities
that make efficient resource housekeeping
nearly impossible.
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Traditional Application Integration
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Proprietary interface formats
Peer-to-Peer interfaces
Wildly grown over time
Predominently Offline-Interfaces
E.g. File downloads/uploads
Interface design „on-demand“ only
Interfaces created from scratch when needed
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Steps to Interface Consolidations
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Reduce Peer-to-peer connections
Establish common interface formats
Makes messages comparable and programs
compatible
Delegate routine works to central services
E.g. Archiving, versioning, emails, printing, FTP
polling
Automate procedures for error handling
and data recovery
E.g. handle duplicate messages, target server failure
etc.
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Benefits from Consolidation
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Administration Resources optimzed
Less training when all interfaces look alike
Error patterns will ressemble
Systematic errors will be solved for all
Develop once, use anywhere
Develop customizable components
Algos are not only „lab-tested“
Eventually reduction of development costs
Reduction of test costs
Higher quality by established components
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Business Activity Monitoring
SOA is the pre-requisite to allow a real-time
discovery and tracking of business activities
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Benefits of BAM
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Business process transparency
Production process transparency
Virtual clear-case production
Agility in business transformation
The earlier you know the quicker you react
Early detection of quality problems
Early discovery of irregularities
E.g. Change of trends and fraud attemps
Legal security and tracking
Immediate information in case of incidents
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Process Automation
Automating processes is the elementary goal of
a SOA
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Benefits of Process Automation
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Accelerate information flow
Uniform Process Flow Tracking
Guarantee one form of protocol
Intrinsic debugging and testing tool set
Enhance data quality
Avoid multiple manual entries
On-the-fly data verification
Use innovative data sources
E.g. RFID, OCR, sampling devices
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Innovation Enablement
SOA will build the infrastructure for
completely new business that are not possible
with traditional means
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Where is Innovation
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Innovation will be a side-effect of SOA
Be creative, surrender to your dreams
Role models: eBay and AMAZON.COM
Innovation may allow a competitive
advantage
Innovation means also agility
Agility means quick reaction on business demands
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Examples of Innovation
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Examples:
Market places
•Offer your goods in collaboration with your competition via
the same one-stop market place portal
Auctions
•Offer your special sales through a bidding portal
On demand services
•Online order configuration and visualization
•Order tracking, document self-service
•webcams (clearcase production)
•Last minute order changes
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Risks
There are few risks in implementing SOA but
painful penalties in failing to do so
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Risks
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Early implementations suffer from
immature frameworks
Late adoption can be disastrous
Risks by hesitant SOA implementation
Innovation gap to leaders
Incapability to deliver (in-time or at all)
Risk through SOA
Information abundance
Uncontrolled intelligence disclosure
Liability by unmanaged publishing
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Is SAP Netweaver ESA a Wise
Choice?
Although SAP‘s current SOA activities around
XI are behind competition we assume that it
will be technology leader by 2009
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XI Today
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XI is today a middleware like many other
XI suffers from
The hybrid ABAP and J2EE construct
Poor design tools
A lack of ready-to-use EDI patterns
Difficult installation procedure
XI Still Sold Separately from ERP
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ESA Tomorrow
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ESA defines a layered EAI technology
Message Queue, Service Repository, Workflow
ESA
ESA
ESA
ESA
integrates into SAP Runtime
will benefit from SAP ABAP Engine
Should Be Available Early 2007
Will Lead the SOA Market by 2009
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How Complicated is an ESA
Implementation with R/3?
Steps to integrate R/3 in a proper ESA
environment
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ESA Enablement of Existing R/3
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Any R/3 system is ESA ready
Through Workflow and Webflow
Through IDocs
Through BAPI technology
Through the Internet Communication Framework ICF
(BSP etc.)
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ESA Prerequistes for non-SAP
What you need to make a legacy application
fit into an ESA landscape
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ESA Enablement of Existing R/3
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Any R/3 system is ESA ready
Multi-protocol middleware
Through RFC proxies
Through HTTP or FTP gateway
Through file adapters
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Blue Elephant League
The Blue Elephant League is a group of business analysts
and advisors that have specialized in the fields of EAI.
[email protected]
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Axel Angeli
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 Axel Angeli has a reputation as platinum EAI mentor and
Netweaver evangelist. He is a SAP oldtimer since R/2 times and
waves the ABAP banner convincingly. His knowledge is founded on
his legacy as lead IT architect in process industries (chemicals, steel).
He shares his insights and analyses as author of best-selling books
and whitepapers. His publications appear in e.g. SAPTIPS.COM,
SDN.COM and searchSAP.com. As an international speaker and
with his own expert column in searchSAP.com he is known for his
brutally honest opinions when it comes to sort sense and nonsense in
IT technology.
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Glossary
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Common Terms
EAI – Enterprise Application Integration
B2B – Business to Business
A2A – Application to Application
HAI – Human Application Interface
SOA – Service Oriented Architecture
ESA – Enterprise Services Architecture, SAP‘s name for SOA
XI - SAP Exchange Infrastructure (predecessor of ESA)
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Lorum Ipsum
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Cater perum transposit merkum
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Recent List of Lectures
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Quotes
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We are drowning in information but
starving for knowledge.
[John Naisbett]
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