Resources

n-FOLD Blog

Articles on managing Amazon Vendor, demand forecasting and quantitative consulting applied to business.

Amazon Vendor · 12 August 2026

What Is the Amazon SP-API and What Is It For

What data the Selling Partner API lets you sync between your operation and Amazon, and why it's the foundation of any real automation on Vendor or Seller Central.

Amazon Vendor · 12 August 2026

Amazon Vendor vs Amazon Seller: What Really Sets Them Apart

Who sells, who sets the price, how you get paid, and which model — or hybrid — fits your brand.

Amazon Vendor · 11 August 2026

How to Become an Amazon Vendor: Requirements and Process

Amazon Vendor isn't applied for, it's received by invitation. What to prepare before the step and what really changes once you accept it.

Amazon Vendor · 10 August 2026

Sales Rank on Amazon Vendor: Why You Need to Track Your ASIN and Your Competitors

Why Sales Rank is relative to your category, not an absolute number, and how to compare it against your competitors to catch problems early.

Amazon Vendor · 9 August 2026

Buy Box on Amazon Vendor: How to Catch a Lost Position in Time

Why the Buy Box gets lost without a price change, why it's hard to catch in time, and how to track it per ASIN without checking Vendor Central every day.

Amazon Vendor · 8 August 2026

Demand forecasting in Amazon Vendor Central: how to read Brand Analytics

What data Amazon provides, why it isn't enough on its own, and how to build a forecasting and replenishment process that avoids stockouts and overstock.