Deploying Business Central in a Three-Computer Topology

In this scenario, you install the Business Central Web Server components, Business Central Server, and the SQL Server database components on separate computers.

This article also applies to deploying the Business Central phone client and Business Central tablet client.

Tip

For simplicity and performance advantages, we recommend that you install the Business Central Web Server components and Business Central Server on the same computer. For more information, see Deploying Business Central in a Two-Computer Topology.

Pre-Installation Tasks

The following table includes tasks to perform before you install the Business Central Web Server components.

Task	Description	For more information, see
Make sure that system requirements are met.	Verify that the computer has the required hardware and software installed.	System Requirements
Install Internet Information Services.	When you install the Business Central Web Server components, Business Central Setup creates a website for the Business Central Web client on IIS. If IIS is already installed, then make sure that the required features are enabled. Note: This step is optional because instead of installing and configuring IIS manually, you can use Business Central Setup to install IIS and enable the required features by setting the Install IIS Prerequisites option to Yes.	Configure Internet Information Services
Determine the TCP ports for the Business Central Web client, client services, and SOAP/OData web services (optional) and allow communication on the port through Windows Firewall.	Business Central Setup creates a website on IIS. During Setup, you will have to choose the port to use for the site. The default port is port 8080. The default client services port is 7085 (7046 in version 20 and earlier). If you will enable SOAP and OData web services, you will also need to specify a port for each. The default ports are 7047 and 7048. If you choose to do so, Business Central Setup will automatically create an inbound rule in Windows Firewall that allows communication on the ports. Otherwise, you will have to do this manually.	Identity and access management in the Windows documentation.
Set up the service account for Business Central Server and the SQL Server database.	Optional. When you install Business Central Server, you can specify a user account that will be used to log on to the Business Central Server instance and Business Central database. The default service account is Network Service. If you want to use Network Service, then no action is required for this task.	Provisioning a Service Account
Obtain and install an SSL certificate.	Optional. If you want to configure SSL on the connection to Business Central Web client, then complete the following procedures: - Obtain an SSL certificate. - Import the certificate into the local computer store of the computer on which you will install the Business Central Web Server components. - Obtain the certificate's thumbprint. Note: You can also configure SSL after you have installed the Business Central Web client. For more information, see Post-installation Tasks.	Configure SSL to Secure the Web Client Connection

Installation Tasks

The following table includes tasks for installing the Business Central Web client.

Task	Description	For more information, see
On the first computer, install the Business Central database components.	Run the Business Central Setup setup.exe file, choose Advanced installation options > Choose an installation option > Custom, and then choose the SQL Server Database Components option.	Install Business Central Using Setup
Start the SQL Server Browser Service on the SQL Server computer.	This task is only required if you are using a named database instance for Business Central. By default, Business Central uses the database instance named BCDEMO. The SQL Server Browser Service is required so that the database instance can be discovered by the Business Central Server instance, which in this scenario, is another computer. To start the SQL Server Browser Service, use SQL Server Configuration Manager.	Start, Stop, Pause, Resume, Restart SQL Server Services
On second computer, install Business Central Server.	Run the Business Central Setup setup.exe file, choose Advanced installation options > Choose an installation option > Custom, and then choose the Server option.	Install Business Central Using Setup
On the third computer, install the Business Central Web Server components.	Run the Business Central Setup setup.exe file, choose Advanced installation options > Choose an installation option > Custom, and then choose Web Server Components option.	Install Business Central Using Setup
Configure delegation from the web server to Business Central Server.	Because Business Central Server is running on a different computer than the Business Central Web Server components, you must configure computer running Business Central Web Server components to delegate its access to Business Central Server on behalf of the device trying to access from the Business Central Web client.	Configure Delegation for Business Central Web Server

Post-installation Tasks

The following table includes tasks that configure the Business Central Web Server components after installation. These tasks are optional depending on your organizational and network requirements.

Task	Description	For more information, see
Change the user authentication method.	The Business Central supports the following authentication methods: Windows, UserName, NavUserPassword, and AccessControlService. By default, Windows authentication is used.	Authentication and User Credential Type
Secure the connection to the Business Central Web client with SSL.	You can help secure Business Central data that is transmitted over the Internet by enabling Secure Sockets Layer (SSL) on the connection to the Business Central Web client.	Configure SSL to Secure the Web Client Connection
Change the configuration of the Business Central Web Server.	There are several parameters in the navsettings.json configuration file for the Business Central Web Server that you can modify to change the behavior of the Business Central Web client. Some of the more common parameters include the Business Central Server instance, company, language, time zone, regional settings, session time out, and online Help URL.	Configuring Business Central Web Server
Set up multiple Business Central Web client applications on a website.	You can set up multiple web server instances for the Business Central Web client on the existing website. The web server instances will use the same address (URL) except with an alias that specifies the specific application.	Creating and Managing Business Central Web Server Instances Using PowerShell
Configure web browsers on devices.	The Business Central Web client supports several different web browsers. To access the Business Central Web client, the web browser must be enabled on a device with cookies and JavaScript.	Web Client Requirements

See Also

Business Central Web Server Overview
Installing Business Central in a Single Computer Environment
Installing Business Central in a Two Computer Environment