Google Apps Developer Blog: New ways to keep data flowing between your apps and ours
The new Sheets API gives developers programmatic access to powerful features in the Sheets web and mobile interfaces, including charts and pivot tables. For example, developers can use Sheets as part of a rich workflow that pushes data from their app into Sheets and allows users to collaborate on that data before the updated data is pulled back into the original app, removing altogether the need to copy and paste.
Similar to the Sheets API, the new Slides API gives developers programmatic access to create and update presentations. For example, developers can use this API to push data and charts into Slides to create a polished report from source data in other application, ready to present.
For developers building tools and workflows for schools, the Classroom API has launched new coursework endpoints to help you build stronger integrations that keep your data in sync.