The document discusses the key attributes of market-leading APIs: API First, API Only, Microservice-backed, Cloud Native, and Extensible. It provides descriptions of each attribute and how they allow APIs to be scalable, globally available, evolvable, and secure. The APIs are designed to be accessible via SDKs and are compliant with open standards like RAML.

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Metered
Scalable
Globally
Available
SDK
Accessible
Fast
Extensible
Microservice-
backed
Evolvable
API
First
API
Only Stateless
Secure
APIs Are Market-leading

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There’s more to an API below the surface
✓ API First
✓ API Only
✓ Microservice-backed
✓ Cloud Native
✓ Extensible
Has the market’s best APIs

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API First API Only Microservice-
backed
Cloud Native Extensible
Start by designing
API first, then
writing code
APIs are the only
means for
accessing
functionality. No
going directly to
database
Microservices back
APIs, allowing
APIs to be
individually
consumable
Public cloud multi-
tenant hosted,
stateless,
deployed to
multiple data
centers, metered
Four five
approaches to
extending the
platform, allowing
for ultimate
flexiblity
APIs Are Market-leading

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Is API First
3. Generate Clients
2. Implement API
1. Model API

5. APIs Can be Accessed Over SDKs
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✓ Type safety
✓ Open source / commercially supported
✓ Enhanced security

6. Open, RAML-compliant APIs, Available Publicly
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✓ compliant
✓ Leverage large ecosystem
✓ Publicly available on

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APIs Designed For Developers
Not around the idiosyncrasies of the
underlying monolithic application

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Is API Only
API
100% feature coverage through
APIs - all functionality, import,
export, integrations, config
API
Legacy Monolith
Data Data
APIs were added later, offering
limited coverage. Must often go
to app or database directly

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• Each API can be consumed
independently
• APIs are backed by individual
microservices – independent
teams, release cycles, etc
• Each microservice is scaled
independently
• No ordering of calls to APIs
APIs are Microservice
Backed
Products Search etc…
Application
Datastore
Infrastructure
Application
Datastore
Infrastructure
Application
Datastore
Infrastructure
Multiple releases/day to production

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APIs Are Cloud Native
Stateless
Geographically
Distributed
Scaled
Independently
Microservice
Backed
Metered
Billing
Cloud
Hosted
Cloud
Hosted
Geographically
Distributed
CQRS
DevOps
Polyglot CQRS

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APIs are Extensible
Events Custom Wrapper Inject via IoCExtend Data Model
• Order submitted
• Customer registered
• Product published
• etc
Custom Code
Custom Code
AWS
Lambda
Functions
Google
Cloud
Functions
Azure
Cloud
Functions
AWS
Lambda
Functions
Google
Cloud
Functions
Azure
Cloud
Functions

12. More Information?
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