If you’re holding more than a few hundred SKUs, you have a focus problem. Every item demands the same checks — counts, reorders, supplier reviews, photo refreshes — but only a fraction of them actually moves the P&L. ABC analysis inventory is the simplest tool in inventory management for fixing that focus problem. You sort SKUs into three tiers based on annual revenue contribution, then apply different policies to each tier: tighter controls and frequent counts on the few high-value items, lighter touches on the long tail.

Managing inventory across one online store is straightforward. Managing it across Shopee, Amazon, Shopify, TikTok Shop, and a WooCommerce site simultaneously — while keeping stock counts accurate in real time — is where most sellers start losing money. (Single-platform sellers should start with platform-native tools: Shopify inventory management for Shopify stores, WooCommerce inventory management for WordPress stores, before layering in a multichannel tool.)