There's a discrepancy between the SLA stated on the creation blade from the Portal and the overview.
https://portal.azure.com/#create/Microsoft.ApplicationGateway-ARM

https://azure.microsoft.com/en-us/services/application-gateway/

@RadoslavGatev Thanks for the feedback! We are currently investigating and will update you shortly.
@RadoslavGatev Thanks for the feedback! The current SLA for App Gateway is 99.95%, so it looks like the portal will need to be updated with the correct value.
@RadoslavGatev this will be updated in the portal with the next update.
We will now proceed to close this thread. If there are further questions regarding this matter, please tag me in your reply. We will gladly continue the discussion and we will reopen the issue.