Specifying different versions

Controller.cs

namespace Product.CommandService.Controllers.Product.V1
{
  [ApiVersion("1.0")]
  [Produces("application/json")]
  [Route("api/Product")]
  public class ProductController : Controller
  {
  }
}

namespace Product.CommandService.Controllers.Product.V2
{
  [ApiVersion("2.0")]
  [Produces("application/json")]
  [Route("api/Product")]
  public class ProductController : Controller
  {
  }
}