How do I automate winodow service and webapplication deployemnet

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PowerShell

deployment

automation

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I am looking for alternates of manual deployments in Windows servers. 
I have two types of applications and I follow the below manual steps which I want to automate. :
 1. Window Services (written in C#)
Backup the existing folders -- > Download the Build from FTP -- > Stop the service --> Replace the new files --> Do the change in config files --> Start the service
 2. IIS Website/WebApplication (Written in ASP.NET)
Backup the existing folders -- > Download the Build from FTP -- > Stop the IIS site--> Replace the new files --> Do the change in config files --> Start the IIS site

I want to know what are the Automate alternates (paid or free) are available to me and what will be the best suited for me as per your opinion ?

Is there any method/Tool available which can be used to do the above deployment steps without logging in the each servers ? 

All my servers are VM and hosted on Azure Infra. 

What I have tried:

I have tried doing all the above steps in Powershell script and that is looking fine so far. But one challanege is I am using Robocopy to copy the files but some files are being failed while copying.

robocopy $BuildPath1  $ServicePath1 /e /is /V /log:$BackupPath1\Backuplog.txt /xd "logs"