In Magento 2 Import tier pricing is such a simple way.
You need to Create CSV file for import advanced pricing in Magento 2 sometimes Tier price is called as Advanced Pricing.
Tier price is used when you want to give discount on bulk purchase of product whether based on customer group, based on Quantity you purchase.
Go To Admin panel in Magento 2,
Click On System from Left Menu,
System -> Import -> Import Settings -> Advanced Pricing
Select Import Behaviour as Add/Update for first time pricing import for a product,
Below is column name for tier price import CSV
sku Product SKU
tier_price_website Website Code (Default ALL Website)
tier_price_customer_group Customer Group
tier_price_qty No. of Quantity to purchase for getting discount on a price
tier_price_value_type tier price value fixed/discount of the actual price
Download Tier price CSV for demo, Tier Price CSV
If you want to replace old value of tier price with New You have to select Replace field from Import behavior in Import Tier price section from Admin panel otherwise price value will be added again for product.
Check Default Behaviour of Product import for Add, Replace and Delete function for Product import behavior.
If you don’t know about Import simple product refer link,Import Simple Product Using CSV Magento 2