A SQL Server technology that supports the creation, management, and delivery of both traditional, paper-oriented reports and interactive, web-based reports.
Microsoft released a blog article here on your options. Basically you need to look into Power BI if you want to get the equivalent SSRS reporting. But if you have a heavily customized investment in SSRS then just keep a VM running SSRS around and have your reporting DB in Azure. SSRS does not need to run on the same machine as the DB it retrieves data from. In fact this isn't even recommended.