Alibaba.com is a leading global B2B (business-to-business) marketplace that connects suppliers and buyers to facilitate international trade. It provides a platform for suppliers to showcase products and for buyers to source items worldwide. The platform supports various industries and offers tools for secure transactions, product discovery, and verifying suppliers to ensure a smooth trading process.

Alibaba.com offers features to verify supplier authenticity and quality. Buyers can look for 'Gold Suppliers', indicating higher verification levels. The platform also provides third-party verification services and encourages checking supplier ratings and reviews. Communicating directly with suppliers and requesting samples can help verify product quality and authenticity before large purchases.

Alibaba.com provides secure payment options, mainly through Trade Assurance, which protects orders and ensures product delivery as agreed. Other methods include credit card, wire transfer, and e-Checking. These options are designed to safeguard buyer interests by ensuring transaction security and providing dispute resolution mechanisms.

Browsing products and contacting suppliers is generally free. However, there might be costs for certain services, such as premium memberships and advertising for suppliers. Buyers typically do not pay fees, but sellers may incur costs for additional services. Users should review specific terms and conditions for any paid services.

Alibaba.com facilitates international shipping through its suppliers, who offer various shipping options. Buyers and suppliers can negotiate delivery terms, including methods and timelines. Clear communication is encouraged to ensure smooth logistics. Buyers should confirm shipping details, costs, and delivery times directly with suppliers to avoid issues and ensure timely order fulfillment.