Instant (IAP) is Aruba's enterprise portfolio with advanced functionality and management through Aruba Central/Airwave. It can be used for medium to large scale deployments.
Instant On is Aruba's SMB solution for small businesses and supports limited functionality when compared to Instant. Management is through the mobile app/web portal. We recommend using Instant On for deployments with upto 25 APs and about 100 users per site.