Configuring Visio Graphics Service Application in SharePoint 2013 using PowerShell

Visio diagrams are wonderful way to express ideas, simplify complex topologies, illustrate the process flow, etc. With Visio Services in SharePoint 2013, you can publish Visio diagrams in SharePoint so that they can be Shared and viewed online without installing Visio application in client computers.

Configuring Visio Services in SharePoint 2013
Provisioning Visio services is straight-forward. Head on to SharePoint 2013 Central Administration site, Application Management >> Service Applications >> Manage Service Applications >> Click on "New" and choose "Visio Graphics Services"
Fill the form with Service application name, choose Service application pool and other details. Click on "OK" to complete creation of visio service application.

Create Visio Graphics Service in SharePoint 2013 using PowerShell:

Add-PSSnapin Microsoft.SharePoint.Powershell -ErrorAction SilentlyContinue

#Start the service instance
Get-SPServiceInstance | Where{$_.TypeName -like '*Visio*'} | Start-SPServiceInstance

#Create new Service Application Pool
New-SPServiceApplicationPool -Name "Visio Services" -Account "Crescent\SPS_Services" 

#To Re-use any existing App Pool, use: $ServiceAppPool = Get-SPServiceApplicationPool "Service Application Pool"

#Create Visio Service Application
$VisioServiceApp = New-SPVisioServiceApplication -ApplicationPool "Visio Services" -Name "Visio Service Application"

#Create Service Application Proxy
New-SPVisioServiceApplicationProxy -ServiceApplication "Visio Service Application" -Name "Visio Service Application Proxy" 

To confirm everything is up and running, Go to the "Services on Server" page in the SharePoint 2013 Central Administration and make sure "Visio Graphics Service" is marked as started and under Service Applications list "Visio Graphics Service Application" is listed.

SharePoint 2013 Visio service application:

SharePoint 2013 Visio unattended service account:
If your visio diagram uses data connectivity, You must create a application id under secure store services for visio graphics services unattended operations.

Grant permissions to Visio Service account on All web applications
Make sure the service account you used for visio graphics service application is granted with dbo access to all content databases of all web applications in order to render visio web drawing. 

#Visio service Account
$VisioServiceAccount = "Crescent\VisioAppPoolAccount"

#Iterate through All Web Application
Get-SPWebApplication | Foreach-Object {
  #Grant access to each web app    
 $_.GrantAccessToProcessIdentity($VisioServiceAccount)
 $_.Update()
} 

How to Publish Visio Files in SharePoint 2013: 
Upload your Visio drawings (either VDW or VSDX) to any SharePoint Library. SharePoint 2013 should render visio file in browser!