On which platform or language was your last project implemented in a working environment?

My last project in a work environment was implemented in Java using the Spring Boot platform. This allowed for quick development of RESTful services with scalability support and database integration.

Example of a simple REST controller in Spring Boot:

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class HelloController {
    @GetMapping("/hello")
    public String hello() {
        return "Hello, World!";
    }
}

Using Java and Spring Boot provided reliability and ease of project maintenance.