Micro services

1. Micro Services
MsA vs SOA: Friends, Allied or Enemies ?
Stefano Rossini
Rome, September 28th
#CWIN17

2. Micro Services | 28/09/2017
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Agenda
1. What is Microservices ?
2. Micro = small enough …
3. Which Technology ?
4. (Micro) Service Oriented (Architecture)
5. MsA & SOA: living togheter as allied

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What is Microservices ?
Micro Services

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From Spaghetti Integration to Microservices through SOA …
1990s and earlier 2010s Microservices
Agility
Faster development
Reduce TTM
2000s Traditional SOA
Loose coupling
Reuse
Integration

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Micro = small enough …
 One thing done well ! (Single Responsability Principle)
 One small Team that must be able to work independently
• Two Pizza Team / Something that could be (re)written in two weeks
• Scrum Team (3-9 people) in one Sprint (2-4 weeks)
Sprint

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Which Technology ?
 Since each service is independent and gets
packaged as a separate isolated application in a
Container, each microservice can be developed
using the best technology for that functionality
Independent + Isolated = Polyglot Architecture + Cloud

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MsA Vs SOA: (Micro) Service Oriented (Architecture)
Car evolved over the years (dust, petrol, diesel, electricity, …) but it’s STILL A CAR
Similarly MsA leverages innovations but they ARE still SERVICES !
Microservices = SOA + AGILE DevOps + CLOUD Containers

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MsA & SOA
Applications that should be optimized for:
 rapid feature development
 react rapidly to changing customer & business needs
(i.e: systems of engagement applications)
MsA typically are used for applications that require to be agile …
…SOA applies for reliability applications
Applications that should be optimized for:
 reliability (slow down the rate of change)
 don't get defects that damage the enterprise datas
(i.e: systems of record)

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MsA & SOA: living togheter as allied
Microservices Architecture applies at the “intra-Application” layer…
…ESBs are used at the “inter-Application” layer
 It is common to see both, traditional SOA based ESBs co-exist with microservices
architectures in an enterprise landscape

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Return Of Experience

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Thank You!
Phone: +39 3316686907
stefano.rossini@capgemini.com
Stefano Rossini
Managing Enterprise Architect
Capgemini Chief Architect L3
http://www.linkedin.com/pub/stefano-rossini/30/977/242
Speaker 1
Photo

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