The document discusses the differences between monolithic and microservices architecture, highlighting the pros and cons of each approach. It explains the role of APIs as intermediaries that facilitate communication between applications and introduces API-led architecture, particularly in the context of Mulesoft's Anypoint platform. Success stories of companies utilizing API-led architecture, such as Mynt and various operators, demonstrate its effectiveness in modern software development.

1. API-led Architecture
Sandeep Kumar Pasumarthy

2. Agenda
● What is Monolithic Architecture?
● What is Microservices Architecture?
● What is an API? & Types?
● What is API-led Architecture?
● Success Stories
● API in Action
● Memes

3. Spot the Major Difference?

4. Monolithic Architecture
A monolithic application is built as a single and indivisible unit. Typically comprises a client-side user
interface, a server side-application, and a database. It is unified and all the functions are managed and
served in one place.

5. Monolithic Architecture
Pros:
• Simple to Develop
• Easy to Debug & Test
• Simple to Deploy
• Low Infrastructure needed
Cons:
• Harder to scale
• Not reusable
• Reliability
• Too large & complex to understand
• Challenges to adopt new technology

6. Microservice Architecture
Microservices are a new way to create applications that break down monoliths into, smaller, individual
services, that can be changed and developed independently from each other.

7. API – Application Programming Interface
An API is a software intermediary that allows two applications to talk to each other. A standardized
wrapper that creates an interface through which MicroServices can be packaged and surfaced.

8. Types of API
Web APIs
- Simple Object Access Protocol (SOAP)
- Remote Procedure Call (RPC)
- Representational State Transfer (REST) – Most Popular
Program-centric APIs
Public APIs
- There are 17000+ publicly available APIs
Ex: Swiggy use Google Maps API
Ex: Zomato provide APIs to search restaurants, menus, places
Ex: Merchants use PayTM payments API
Private APIs
- Thousands of private APIs companies use to expand operations

9. API-Led Architecture with MuleSoft
MuleSoft has built on this concept of the API as a foundational component by developing Anypoint
Platform, a solution that enables the development and delivery of the API layer that describes and
enriches enterprise microservices

10. {“It’s time to see API in Action”}

11. Mynt’s Transformation from P-to-P to API-Led
API-Led ArchitecturePoint-To-Point

12. Success Stories of API-Led Architecture
UK based largest operator of hop-on-hop-off open-top
sightseeing tours.
UK based Mobile-only bank
A Philippines-based Fintech start-up
US based Carbonated Soft Drink manufacturer

13. Memes…

14. Memes…

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