The Accounts framework provides access to user accounts stored in the Accounts database. An account stores the login credentials of a particular service, such as Twitter, that can be used as authentication for the service. By implementing the Accounts framework into your app, you do not need to be responsible for storing account logins yourself. Instead, the user can grant access for your app to use their account login credentials, bypassing the need to type their username and password. If no account for a particular service exists in the user’s Accounts database, you can let them create and save an account from within your app.

The Address Book framework provides access to a centralized contacts database, called the Address Book database, that stores a user’s contacts. Applications such as Mail and Messages use this database to present information about known and unknown persons.

The Ad Support framework provides apps with access to an identifier that can be used only for serving advertisements, as well as a flag which indicates whether a user has limited ad tracking. Accessing the advertising identifier requires apps to read and honor the opt-out flag.

Get intelligent performance optimizations for superior web and mobile app experiences. Ion, Akamai’s flagship performance solution, is a suite of intelligent performance optimizations that helps deliver superior website and mobile app experiences. Built on the globally distributed and near-infinitely scalable Akamai Intelligent Edge Platform™, Ion continuously monitors real user behavior, applying best practice performance optimizations automatically and adapting in real time to changes in content, user behavior, and connectivity.

Amazon Web Services SDK for iOS.

AppsFlyer applies advanced attribution analytics to generate high value app users from your mobile acquisition and retargeting campaigns. AppsFlyer’s SDK is lightweight and can be integrated in minutes. It tracks and measures all your user acquisition campaigns, no matter which ad network or agency is running it.

The Audio Toolbox framework provides interfaces for recording, playback, and stream parsing. In iOS, the framework provides additional interfaces for managing audio sessions.

The AV Foundation framework provides an Objective-C interface for managing and playing audio-visual media in iOS and OS X applications.

Amazon Cognito lets you easily add user sign-up and sign-in to your mobile and web apps. With Amazon Cognito, you also have the options to authenticate users through social identity providers such as Facebook, Twitter, or Amazon, with SAML identity solutions, or by using your own identity system. In addition, Amazon Cognito enables you to save data locally on users devices, allowing your applications to work even when the devices are offline. You can then synchronize data across users devices so that their app experience remains consistent regardless of the device they use. With Amazon Cognito, you can focus on creating great app experiences instead of worrying about building, securing, and scaling a solution to handle user management, authentication, and sync across devices.

Amazon Cognito lets you easily add user sign-up and sign-in to your mobile and web apps. With Amazon Cognito, you also have the options to authenticate users through social identity providers such as Facebook, Twitter, or Amazon, with SAML identity solutions, or by using your own identity system. In addition, Amazon Cognito enables you to save data locally on users devices, allowing your applications to work even when the devices are offline. You can then synchronize data across users devices so that their app experience remains consistent regardless of the device they use. With Amazon Cognito, you can focus on creating great app experiences instead of worrying about building, securing, and scaling a solution to handle user management, authentication, and sync across devices.

The AWS Mobile SDK helps you build high quality mobile apps quickly and easily. It provides easy access to a range of AWS services, including AWS Lambda, Amazon S3, Amazon DynamoDB, Amazon Mobile Analytics, Amazon Machine Learning, Elastic Load balancing, Auto Scaling and more. The AWS Mobile SDK includes libraries, code samples, and documentation for iOS, Android, Fire OS, and Unity so you can build apps that deliver great experiences across devices and platforms.

Amazon Simple Storage Service (Amazon S3) is object storage with a simple web service interface to store and retrieve any amount of data from anywhere on the web. It is designed to deliver 99.999999999% durability, and scale past trillions of objects worldwide. Customers use S3 as primary storage for cloud-native applications; as a bulk repository, or "data lake," for analytics; as a target for backup & recovery and disaster recovery; and with serverless computing. It's simple to move large volumes of data into or out of Amazon S3 with Amazon's cloud data migration options. Once data is stored in S3, it can be automatically tiered into lower cost, longer-term cloud storage classes like S3 Standard - Infrequent Access and Amazon Glacier for archiving.