@Async is similar (but not the same as javax.ejb.Asynchronous)

It can be used for CDI beans (-> there is no need to use EJBs).

Supported use-cases:

@Async
//...
public class MyAsyncService
{
    public void processIt1(/*...*/)
    {
        //...
    }

    public java.util.concurrent.Future processIt2(/*...*/)
    {
        //...
    }
}

//or

//...
public class MyAsyncService
{
    @Async
    public void processIt1(/*...*/)
    {
        //...
    }

    @Async
    public java.util.concurrent.Future processIt2(/*...*/)
    {
        //...
    }
}

With OWB 1.2+ @Async is also possible for asynchronous observers:

//...
public class MyObserver
{
    @Async
    public void observeAsync(@Observes MyEvent myEvent)
    {
    }
}

Every method annotated with @Async will get it's own request-scope ( if you add deltaspike-cdictrl-owb). Without an implementation of the cdictrl-api, you can still use all scopes which get started autom. (like @ApplicationScoped, @TransactionScoped,...).

This add-on was tested with Apache OpenWebBeans as well as with TomEE. This add-on isn't compatible with Weld, because proxies are handled differently with Weld.