On the Define the Archiving SQL Server store page, when defining the SQL Server store for both Skype for Business Server Archiving and Monitoring, select the SQL Server instance created earlier for Skype for Business Server 2019. On the Select an Office Web Apps Server page, click New, and specify the FQDN of the application server. This is a feature you will enable and bring online in a later phase of migration.

On the Associate server roles with this Front End pool page, during pilot pool deployment, do not choose the Enable an Edge pool to be used by the media component of this Front End pool option.

After merging the topologies and configuring the Skype for Business Server 2019 Mediation Server, you can decide whether to keep the collocated Mediation Server, or change it to a stand-alone server when you move the Mediation Server role to Skype for Business Server 2019 later in the deployment process. When merging a legacy topology with Skype for Business Server 2019, we require that you first collocate the legacy Mediation Server. On the Select collocated server roles page, we recommend that you choose to collocate the Mediation Server in Skype for Business Server 2019. For example, if you are deploying only instant messaging (IM) and presence features, you would select the Conferencing check box to allow multiparty IM, but you would not select the Dial-in (PSTN) conferencing, Enterprise Voice, or Call Admission Control check boxes, because they represent voice, video, and collaborative conferencing features. On the Select features page, select the check boxes for the features that you want on this Front End pool. It cannot match the name of the currently deployed legacy pool or any other servers currently deployed. The pool or server FQDN that you define for the pilot pool must be unique.

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