# Spotfire Packages and R Binary Packages

Spotfire has two different types of packages: the Spotfire package (SPK), and the R language binary package.

The SPK is specific to Spotfire add-in development and deployment. You can create a Spotfire SPK that contains TERR engine-compatible R binary packages, and then deploy the SPK to a Spotfire Server to be distributed to other users in your organization.

Spotfire Analyst includes a license option for the TERR local engine. Your R binary packages, deployed using the SPK mechanism, can be used to create Spotfire analyses that use data functions.

R binary packages can run faster in a local TERR engine than one running in the TERR engine installed remotely on a Spotfire Statistics Services installation. For more information see Packages Running on a local Spotfire Enterprise Runtime for R engine in Spotfire.

Note: Because you are creating or downloading a package to be distributed to Spotfire Analyst users, the package must be a Windows binary package. See Limitations and considerations for more information.

To create the SPK containing your R binary packages, you need the SpotfireSPK package. This package is provided with your TERR installation.