The document discusses several different software architecture styles including: - Client-server, two-tier, and three-tier architectures which separate databases, applications, and hosts across different tiers or layers. - N-tier and peer-to-peer architectures which distribute databases, requests, and responses across multiple interconnected peers or layers. - Event-driven architectures which use events, functional logic, and message brokers to handle asynchronous messaging between components. - Object-oriented architectures which divide an application into reusable self-contained objects that encapsulate data and behavior. - Microservices architectures which separate applications into independently deployable smaller services with their own data stores and business logic.

1. Architecture - Software
DSK Chakravarthy

2. Client – Server (or) Two tier
DB
Application
Host
Request
Response
i-NET
Demilitarized Zone

3. Three tier
DB
Application Host
Request
Response
i-NET
DMZ Network with firewall and other security devices
Internal Network / Local Area Network
Application 1

4. N-tier (or) Peer-2-
Peer
DB
Request
Response
i-NET
DMZ Network with firewall and other security devices
Internal Network / Local Area Network
Peer 1 Peer 2
Peer n
Peer m

5. Delegate Layer
Event Driven Architecture ( aka .. Call/CC !!?? )( aka .. Call/CC !!?? )
Event Layer
Events
Functional
Logic
Message Brokers

6. Object Oriented Architecture
A design paradigm based on division of responsibilities for an application or system into individual reusable
and self-sufficient objects, each containing the data and the behavior relevant to the object.
Source : https://msdn.microsoft.com/en-us/library/ee658117.aspx
Agent
- AddressRef : AdrsDets
- Email
- PhoneNum
+ Register()
+ UpdateDetails()
+ UploadCertificates() AddressDetails
- RefKey
- DoorNum
- LaneRef
- LocationRef
- AreaRef
- ZipCode
+ ValidateAddress
User
- RefKey
- Password
- LoginStatus
- FirstName
- LastName
+ GetDetails()
SuportExec
- Email
+ CreateAgent()
+ CreateTradePerson()

7. Distributed Architecture
DB
Request
Response
DMZ Network with firewall and other security devices
LAN / WAN
Middleware Platform
It is a conglomeration of autonomous components distributed with various hosting platforms
that communicate through network protocols like http/tcp

8. SOA
DB
DMZ Network with firewall and other security devices
WSDL
Service discovery

9. Domain Driven Architecture
DB
DMZ Network with firewall and other security devices
Services
Domain Factory
Event Handler
Domain Manager

10. Onion Architecture
InfrastructureUnitTests
Domain / App
Logic Interfaces
Domain / App Services
Business Rules Engine
Presentation Wrapper
Domain Entities
APIs /
Services
Web /
Mobile /
etc.,
Load /
Stress /
etc.,
DB Layer

11. Clean Architecture
External Interfaces
Entities
Controllers
Use Cases
Presentation Wrapper
APIs /
Services
Web /
Mobile /
etc.,
Load /
Stress /
etc.,
DB Layer
Enterprise Business
Rules
Application Business
Rules
Interface Adapters
Frameworks &
Plug-ins

12. Aspect Oriented Architecture
External
Interfaces
Entities
Controllers
Use Cases
Presentation Wrapper
Enterprise Business Rules
Application Business Rules
Interface Adapters
Frameworks & Plug-ins
Cross cutting concerns
Application
Production Code
Programming model

13. Micro-services Architecture
Service 5
Service 4
Service 3
Service 2
Service 1 Business Rules Engine 1
Business Rules Engine 2
Business Rules Engine 3
Business Rules Engine 4
Business Rules Engine 5
DB 1
DB 2
DB 3
DB 4
DB 5

14. Thanks ..