Category Archives: Architectural Pattern

Architectural design pattern

Building Microservices on AWS: Lambda vs ECS Fargate

By | October 6, 2025

Selecting the right compute model is one of the biggest architectural decisions teams face on AWS. This guide contrasts serverless functions powered by AWS Lambda with containerized services running on Amazon ECS with Fargate. You’ll find side-by-side diagrams, architecture variants (including API Gateway front doors), and a comprehensive comparison of cost, performance, security, scaling, and… Read More »

Building a Scalable Serverless REST API with Lambda, API Gateway

By | September 22, 2025

This blog provides a comprehensive overview of one of the most popular serverless architectural patterns on AWS: a REST API powered by API Gateway, AWS Lambda, and DynamoDB. This pattern is ideal for building scalable, cost-effective CRUD (Create, Read, Update, Delete) APIs without managing any servers. 1. Architecture Overview The flow is designed for high… Read More »

Enterprise Authorization Flow: From Auth Code to Secure API Access

By | September 15, 2025

Introduction Once SAML SSO authentication is complete and an auth code has been generated, the next critical phase begins: Authorization. This comprehensive guide explores how the one-time auth code is securely exchanged for access tokens, how those tokens enable API access control through AWS Lambda authorizers, and how role-based permissions are enforced throughout the system.… Read More »

Enterprise SAML SSO Implementation: From Trust Setup to Auth Code Generation

By | September 15, 2025

Introduction Single Sign-On (SSO) has become the cornerstone of secure enterprise authentication, enabling users to access multiple applications with a single set of credentials. This comprehensive guide explores the implementation of SAML (Security Assertion Markup Language) SSO in a real-world financial services scenario where TechCorp acts as an Identity Provider (IdP) for users accessing the… Read More »

Introduction to Model-View-Presenter

By | April 21, 2015

Introduction This is a simple MVP implementation in an ASP.NET application. I used this pattern a lot during 2007-2011 time period before ASP.NET MVC in Microsoft world started to gain popularity. MVP separates visual display logic from data procurement logic. In Model-View-Presenter, View is solely responsible for display of data. Presenter is concerned about getting the relevant… Read More »