function handler(event) {
    var host = event.request.headers.host.value;
    var target;
    if (host.indexOf('landvex') >= 0) {
        target = 'https://www.landvex.com';
    } else if (host.indexOf('quixzoom') >= 0) {
        target = 'https://www.quixzoom.com';
    } else if (host.indexOf('wavult') >= 0) {
        target = 'https://wavult.com';
    } else {
        target = 'https://wavult.com';
    }
    return {
        statusCode: 301,
        statusDescription: 'Moved Permanently',
        headers: { location: { value: target } }
    };
}