Dairy Business Innovation Act of 2023 This bill increases the authorization of appropriations for the Dairy Business Innovation (DBI) Initiatives for each fiscal year. Under the Agricultural Marketing Service, the DBI Initiatives support dairy businesses in the development, production, marketing, and distribution of dairy products. The DBI Initiatives provide direct technical assistance and subawards to dairy businesses, including for niche dairy products and dairy products derived from cow milk, sheep milk, and goat milk.