Vercel is a cloud platform for hosting websites and web applications. Using Vercel's serverless infrastructure to build a product has several benefits, including:

1. Reduced costs: Because Vercel's serverless infrastructure only charges for the resources you use, you can save money by only paying for what you need. This is especially beneficial for products that have unpredictable or variable usage patterns, as you won't have to pay for idle capacity.

2. High scalability: With Vercel's serverless infrastructure, you can easily scale your product up or down to meet changing demand. This means that your product will be able to handle sudden spikes in traffic without downtime or performance degradation.

3. Improved reliability: Vercel's serverless infrastructure is built on top of a highly-available and redundant network, which means that your product will be able to withstand outages and other disruptions. This can help ensure that your product is always available to your users.

4. Faster deployment: Vercel's serverless infrastructure makes it easy to quickly deploy and update your product. This means that you can get your product to market faster and more easily make changes and improvements over time.

Overall, using Vercel's serverless infrastructure to build a product can help you reduce costs, improve scalability and reliability, and speed up deployment. This can ultimately help you build a more successful product.