In-Depth. SharePoint Is Now Ripe for App Modernization . Now that Microsoft Azure has become a robust PaaS platform by offering a lot of additional services, using the provider-hosted add-in ...

The Autohosted Apps service, introduced with SharePoint 2013’s launch, automatically provisions an Azure website and, in some cases, also an Azure SQL database when apps are installed.

Citrix Systems is making its cloud-based storage service ShareFile more Microsoft-friendly with SharePoint integration and the ability to store data on Azure.

Azure AD is also seen as useful for roaming enterprise app settings, supporting Windows Hello for Business biometric logins, enabling self-service capabilities such as the retrieval of BitLocker keys ...

Most SharePoint experts I talk to agree with this but whether or not Office 365 is a real deal-breaker depends on the customer's application and overall requirements.