The document discusses apps and their distribution, payment, and identity. It mentions apps, distribution, payment, mass, real identity, canvas, and API access across different versions. Distribution channels and payment options are listed for versions 3, 12, 15, and 9 of an app, with open API access starting at version 7.7 and increasing engagement at versions 10 and 10.

1. Apps
Distrbution
Payment
Mass
Real Identity
Apps
Canvas
3
Distribution
12
15
9
API
7.7
10
10 Open