Ließt man sich die folgende Passage aus dem iOS 9 Entwicklerleitfaden einmal durch, dürften einem doch direkt ein paar Ideen kommen mit was für Anfragen man welche Inhalte von unseren App zukünfig verknüpft.
App Search in iOS 9 gives users great new ways to access information inside of your app, even when it isn’t installed. When you adopt iOS 9 Search, users can access activities and content deep within your app through Handoff, Siri Reminders, and Search results.
In addition to improving the user experience, adopting Search helps you increase the usage of your app and improve its discoverability by displaying your content when users search across the system and on the web. For an example of how this works, imagine that your app helps users handle minor medical conditions, such as a sunburn or a sprained ankle. When you adopt iOS 9 Search, users searching their devices for “sprained ankle” can get results for your app even when they don’t have your app installed. When users tap on a result for your app, they get the opportunity to download your app. Similarly, users can get results for your app and related web content when they search for “sprained ankle” in Safari. Tapping on a result in Safari takes users to your website, where they can download your app from your App Banner.
Adopting iOS 9 Search is easy: You don’t need any prior experience with implementing search, and most developers find that it takes only a few hours to make their content universally searchable. iOS 9 introduces the following APIs you can use to adopt Search:
The NSUserActivity class includes new methods and properties that help you index activities and app states to make them available in search results. Just about every app can take advantage of the NSUserActivity APIs to make useful content available to users. For more details, see Use NSUserActivity APIs to Make App Activities Searchable.
The new Core Spotlight framework (CoreSpotlight.framework) provides APIs that help you index the content in your app and enable deep links to that content. Core Spotlight is designed for apps that handle persistent user data, such as documents, photos, and other types of content created by or on behalf of users. To learn more about this framework, see Use Core Spotlight APIs to Make App Content Searchable.
Adding the appropriate web markup to your website makes your related web content searchable and helps you enrich the user’s search results. Adding a Smart App Banner gives users an easy way to link directly to your app. For more information about ways to make your web content searchable, see Use Web Markup to Make Web Content Searchable. To learn how to use a Smart App Banner, see Promoting Apps with Smart App Banners.
The three Search-related APIs are designed to work in concert. If you mirror app content on the web, you can adopt all three; apps that don’t have related content on the web can adopt NSUserActivity and the Core Spotlight APIs.
Adopting these APIs appropriately can improve the relevancy and ranking of the results related to your app. To give users the best search experience, the system measures how often users interact with app content and with Search and Safari results. iOS computes relevancy and ranking using information such as the frequency with which users interact with app activities, the time that passes between tapping a result and opening a deep link within your app, and (when appropriate) the reputation of your website.
Important: Be sure to avoid over-indexing your app content or adding unrelated keywords and attributes in an attempt to improve the ranking of your results. Because iOS measures the level of user engagement with search results, items that users don’t find useful are quickly identified and can eventually stop showing up in results.
There are two main things you can do to ensure that users have a great experience when they search for content related to your app. First, make sure that your results are rich, descriptive, and useful. When users view compelling information that’s directly related to their query, they’re much more likely to engage with your app. Second, when users tap a result, take them directly to the appropriate area in your app. As much as possible, avoid presenting intervening screens or experiences that delay users from reaching the content they’re interested
https://developer.apple.com/library/prerelease/ios/releasenotes/General/WhatsNewIniOS/Articles/iOS9.html#//apple_ref/doc/uid/TP40016198-DontLinkElementID_1
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