Reporting Role Now Part of CMS in Sitecore 10.1
If you are wondering why when deploying your Sitecore environment there is no Reporting role, it is because as of Sitecore 10.1, it is now combined with the CMS. Specifically:
In Sitecore 10.1 and later, the xDB Reporting role has been combined with the Content Management role.https://doc.sitecore.com/en/developers/101/platform-administration-and-architecture/experience-platform-roles.html
Please review the “Architecture and Roles” documentation for Experience Platform to review the available roles supporting XP via the following documentation: Experience Platform roles (sitecore.com)
Note that there are separate roles by type if you are confused which roles belong to which part of Sitecore (ex. XM, XP, and XC) per the Sitecore 10 Application Roles, Storage Roles, and Indexes article).
Thanks Kelly for flagging this big change in Sitecore Architecture.