Do you have a migration plan

At a high level, the plan is:

• Install SharePoint
• Install with topology of your choice in SharePoint 2016 (or use AutoSPInstaller)
• Configure Application services

• Run the wizard (or use script. the community script wasn't ready when Thiago and I was migrating intranet)
• Configure user profile and its permission configuration (see msdn)

• Test Migration
• Install required WSP packages in 2016
• Test migrating content database from old to new
• Fix all the missing customizations error in the above step, then do the content database migration
• (Optional) Migrate services database (depends on which service applications do you use)
• Post migration setup

• Configure search

  • Do you use default zone URL in search content source
  • Do you add https by extending web application
  • Do you fix search with Office App for content preview ? (on premise only)
• Configure metadata (optional)
• Test test tes t
• Go-live migration
• Put old SharePoint into read-only
• Refresh content & service database from SP 2013 to 2016
• Update DNS
• Decommission old SharePoint server and database (after 2 weeks when you're confident with the new environment)