（3）ARKit 1, ARKit 1.5, ARKit 2
Luca Maestri - Apple, Inc.
Mike, as we said, during the September quarter, (1) we set new records for many, many services categories, right, from Apple Music to cloud services to the App Store to AppleCare and Apple Pay really has an exponential trajectory right now.
When we look at our services business, we think about the fact that we have a very large and growing installed base. The installed base of all our major product categories is at an all-time high and has been growing over the last several quarters, so the opportunity for us to monetize our services business continues to grow over time.
Of course, we're also improving the quality of the services that we provide and if you look back during the last three years, we've added new services to our portfolio. We added Apple Pay, we added Apple Music. We added this advertising business on our App Store. And clearly, we will want to continue to offer new services over time, so there are a number of vectors that allow us to continue to grow the business over time.
(2) We have stated that we want to double the size of the services business from the level that we had in fiscal 2016 by 2020. We are well on pace to achieve that, and we feel very, very confident about the future and the opportunities that we have in the services space
Timothy Donald Cook - Apple, Inc.
Mike, in terms of your question on AR, I have a different view than you do on this one. (3) Just a year ago, practically a year ago, we came out with ARKit 1. Six months or so after that we came out with 1.5. We then recently came out with ARKit 2. (4) The number of things that you can do are growing significantly. The number of developers that either have done something, or even more the case, that are working on things that I've seen are growing tremendously.
There's a lot of interest out there and the number of categories that I'm seeing from gaming to shopping, to I was in China a few weeks ago and saw AR in an art sense, in an art exhibit. I was in Berlin last week and saw it being used in a historical educational kind of sense. I'm seeing it sort of everywhere I go now, and so I think we are in the early days, (4) and it'll keep getting better and better, but I'm really happy with where things are at the moment.
1. Timothy Cook- 蒂姆·库克。1998年年初，库克进入苹果，任副总裁，主管苹果的电脑制造业务。 2011年接替乔布斯担任苹果公司CEO。2016年7月1日，耐克公司任命苹果CEO蒂姆·库克（Tim Cook）为首席独立董事。他一直主张政治改革国际和国内监督、网络安全、企业税收、美国制造业和环境保护。
2. ARKit - ARKit是苹果在2017年WWDC推出的AR开发平台。开发人员可以使用这套工具配合iPhone和iPad来创建增强现实应用程序。2018年6月5日，苹果全球开发者大会WWDC 2018 在加州圣何塞召开，会上，苹果宣布推出旗下AR工具的新版本：ARkit 2.0。ARKit支持两部设备分享同样的虚拟物品，让AR体验更有趣。ARKit框架提供了两种AR技术：基于3D场景(SceneKit)实现的增强现实；基于2D场景(SpriktKit)实现的增强现实。可以实现AR测量，多人互动等功能。