What does it mean to become an API-first enterprise? Where do APIs fit into modern application architecture? Are APIs and microservices just new terms for SOA? Easily and securely exposure your services as APIs to internal developers and partners? Join for a discussion on technical and business issues of going API-first based on Apigee’s experiences helping the largest global enterprises become digital

2. API-Centric Architecture
WHY AND HOW
Presented by Ed Anuff, Product Strategy

3. API CITY TOUR 3 3
Ed Anuff
@edanuff

4. What do we mean by APIs?
4
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5. API CITY TOUR 5 5
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APIis for apps

6. API CITY TOUR 6
The A in API is for apps
6
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Rich Clients
(Visual Basic, Delphi, etc.)
Thin Clients
(Web Applications)
Rich Clients
(Mobile Apps)

7. API CITY TOUR 7 7©2015 Apigee. All Rights Reserved.
Browser
HTTP
App
Internal
External

8. API CITY TOUR 8
Increasingly
lightweight
Hosted in an
environment
(often virtualized, increasingly
a container)
Monolithic presentation
and business logic
Modern server-side app
8
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Often runs in
an App Server

9. API CITY TOUR 9 9
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App
Back-end
API

10. API CITY TOUR 10
Sometimes integration-based,
but increasingly API-based
Apps need resources
Email
services
10
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Databases
and storage

11. API CITY TOUR 11
12-factor apps
11
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Adam Wiggins http://12factor.net/ MIT License
My SQL
Outbound
Email Service
Amazon S3
Twitter
Attached
Resources
Production
Deploy
IV. Backing Services. Treat backing services as attached resources
mysql://auth@host/db
http://auth@api.twitter.com/

12. API CITY TOUR 12
Cloud business services
12
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Database-as-a-Service Email-as-a-ServiceStorage-as-a-Service MQ-as-a-Service
All are already in widespread use…

13. API CITY TOUR 13
Internal resources
13
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Many new resource
services already
are API-based
Developers prefer to use
APIs even with the added
work of learning APIs
versus ESB approaches

14. API CITY TOUR 14
Internal
External
14©2015 Apigee. All Rights Reserved.
App
Front-end
Back-end

15. API CITY TOUR 15
Mobile API architecture
15
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Server-Side
Application Logic
& Infrastructure
API
Device-Side
App Logic
SDK

16. API CITY TOUR 16
Clients talk to “Experience APIs”
16
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Mobile clients talking
to server-side apps
via an API
App-specific, often not reusable
Not integration, not SOA
HTML5/JS
and single page apps

17. API CITY TOUR 17 17©2015 Apigee. All Rights Reserved.
Internal
External
App
Front-end
AppApp
Back-end

18. API CITY TOUR 18
App-to-App
18
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API-centric
App developers expose their own
APIs and learns others’ APIs
Agility trade-offIntegration
Normalized data
interchange

19. API CITY TOUR 19 19
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Internal
External
Front-end
App
AppApp
Back-end

20. API CITY TOUR 20 20
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Internal
External
App
Partner App3rd Party App
Back-end
Front-end
App

21. API CITY TOUR 21
App-to-External-App (API Ecosystems)
21
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New security
concerns
Different
metrics
API design
matters

22. API CITY TOUR 22 22©2015 Apigee. All Rights Reserved.
Internal
External
AppApp
Back-end
Front-end
service
service
service
service
service
service
service
service
service
Micro services
architecture

23. API CITY TOUR 23
Micro-Services
23
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Easier to
scale component
services individually
Allows
polyglot
programming
Components are
services, not
in-process objects

24. Evolving towards API First
24
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25. API CITY TOUR 25
Back-end
Services
App Server
Monolithic Web App
25©2015 Apigee. All Rights Reserved.
Web Apps

26. API CITY TOUR 26
Back-end
Services
App Server
API-adapted Web Apps
26©2015 Apigee. All Rights Reserved.
Web Apps
Consumption focused
API
Other Apps

27. API CITY TOUR 27
API-adapted SOA
27
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Exposure focused
ESB
Internal
Services
App Server
Web Apps
API
Other Apps

28. API CITY TOUR 28
API-First Enterprise
28©2015 Apigee. All Rights Reserved.
API Tier
Security AnalyticsPersistence Orchestration
All Apps
Mobile Apps Other AppsWeb Apps
ESB
App Servers
Backend
Services

29. API CITY TOUR 29
API Tier with Analytics
29
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Analytics
Apps App Server
APIs APIs
Services
App Consumption
• API adaptations needed for apps
• Enable developers for business
• Security for app-to-API
• App and behavior analytics
API Exposure
• APIs architected for abstraction
• Enable developers for API use
• Security for API-to-backend
• API Analytics

30. API CITY TOUR 30
What to ask
when people say
“We need APIs”
Where to go once
you’ve become
API-centric
How to get to
an API-centric
Architecture
Summary
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? ? ?

31. Thank you
©2015 Apigee. All Rights Reserved.
Ed Anuff
@edanuff