Ignito

Ignito

Share this post

Ignito
Ignito
[System Design Tech Case Study Pulse #50] 400+ Million Active Accounts : How Paypal Actually Works
Ignito

[System Design Tech Case Study Pulse #50] 400+ Million Active Accounts : How Paypal Actually Works

Inside one of the world's biggest payment system....

Naina Chaturvedi's avatar
Naina Chaturvedi
Jan 07, 2025
∙ Paid

Share this post

Ignito
Ignito
[System Design Tech Case Study Pulse #50] 400+ Million Active Accounts : How Paypal Actually Works
Share

Hi all,

As of 2024, PayPal serves over 400 million active accounts, necessitating a robust, scalable, and secure infrastructure to manage this enormous user base. The company's ability to handle such a massive number of transactions seamlessly is a testament to its cutting-edge technology stack, innovative architectural decisions, and continuous optimization efforts.

In this post, I'll delve into the technical intricacies wrt paypal and how payment system works.


I’ll cover as follows -

1. User Interaction Flow

2. Core Algorithms

3. Tech Stack Components

4. Architecture Diagram

5. Microservices Interaction

This post is for paid subscribers

Already a paid subscriber? Sign in
© 2025 Naina
Privacy ∙ Terms ∙ Collection notice
Start writingGet the app
Substack is the home for great culture

Share