To integrate multiple GDS APIs into a unified travel platform, the following technology stack is recommended:

1. Backend: Use a robust backend framework like Node.js, .NET, or Java Spring Boot for handling API requests and managing data.

2. Database: Employ a scalable database solution such as PostgreSQL, MySQL, or MongoDB to store and manage travel data efficiently.

3. API Management: Implement an API management platform like Apigee or Kong to handle API requests, monitor performance, and manage security.

4. Middleware: Utilize middleware solutions to handle data transformations and integrations between different GDS APIs.

For instance, Provab’s Integration Services can assist in selecting and implementing the right technology stack. Additionally, Provab’s expertise ensures seamless integration across multiple GDS APIs.

In summary, a combination of a robust backend framework, scalable database, API management platform, and middleware is ideal for integrating multiple GDS APIs into a unified travel platform.