The release of iOS 9 is just around the corner and with that comes App Transport Security. This new feature will enforce that your app's network connections follow best practices. This is handled at a low level and is enabled by default in iOS 9 and OS X El Capitan — and may cause issues in existing apps.
We have a few apps that load data from Amazon Web Services over HTTPS and on iOS 9 they stopped working. The reason being that App Transport Security requires server certificates to be signed with SHA-2 by default and at the moment the AWS certificates use SHA-1.
Until then we can add the domain in question as an exception and set
NO. This does not turn off ATS (that would be a bad idea) it simply states that we accept ciphers other than SHA-2.