Whether you develop web applications or mobile apps, the OAuth 2.0 protocol will save a lot of headaches. This concise introduction shows you how OAuth provides a single authorization technology across numerous APIs on the Web, so you can securely access users... data-such as user profiles, photos, videos, and contact lists-to improve their experience of your application.

Through code examples, step-by-step instructions, and use-case examples, you...ll learn how to apply OAuth 2.0 to your server-side web application, client-side app, or mobile app. Find out what it takes to access social graphs, store data in a user...s online filesystem, and perform many other tasks.

• Understand OAuth 2.0...s role in authentication and authorization
• Learn how OAuth...s Authorization Code flow helps you integrate data from different business applications
• Discover why native mobile apps use OAuth differently than mobile web apps
• Use OpenID Connect and eliminate the need to build your own authentication system