Use the following strategies to reduce the number of products (SKUs):
Moving stores or websites reduces the multiplier. If you have 50,000 SKUs, ten Websites, and ten Customer Groups, the Effective Number of SKUs is 5 million. Removing five Customer Groups reduces the Effective SKUs to 2.5 million.
Use alternative product features for custom pricing to replace shared catalog and customer groups multipliers.
Restructure the catalog—
Reduce the number of products assigned to categories.
Decrease the number of SKUs by decreasing the number of stores, websites, customer groups, or number of products.
Provide more product variations by using custom options instead of creating separate products.