Why Pricing strategy (discounts, coupons) in LLD? - Purpose & Use Cases

The Big Idea

What if your pricing could adapt instantly to every customer without mistakes or delays?

The Scenario

Imagine running a small online store where you want to offer discounts and coupons to attract customers. You try to manage all discount rules and coupon codes manually using spreadsheets and emails.

The Problem

This manual method is slow and confusing. You often forget to update discounts, apply wrong prices, or miss expired coupons. Customers get frustrated when discounts don't work, and you lose sales and trust.

The Solution

A pricing strategy system automates discounts and coupons. It applies rules correctly and instantly during checkout. It tracks usage, expiration, and combinations without errors, making pricing flexible and reliable.

Before vs After

✗ Before

if coupon == 'SAVE10' and not expired:
    price = price - 10

✓ After

price = pricingEngine.applyDiscounts(cart, userCoupons)

What It Enables

It enables seamless, error-free pricing adjustments that boost sales and customer satisfaction effortlessly.

Real Life Example

Think of Amazon offering seasonal discounts and personalized coupons automatically at checkout, without customers needing to enter codes manually or worry about rules.

Key Takeaways

Manual discount handling is error-prone and slow.

Automated pricing strategy systems apply rules accurately and quickly.

This leads to better customer experience and increased revenue.