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+# v0.3 Reserved Services
+
+The `v0.3` series introduces a concept of "reserving" services. The intention is that the `zrok` control plane will support limits on the number of reserved services (and eventually `frontend`instances) that an account is allowed to utilize. Service reservations could also be time-limited, or possibly even bandwidth-limited (the reservation expires after a bandwidth threshold is crossed).
+
+## Reserved Services Example
+
+`v0.3` introduces the `zrok reserve` command:
+
+```
+$ zrok reserve private http://localhost:9090
+[   0.047]    INFO main.(*reserveCommand).run: your reserved service token is 'x88xujrpk4k3'
+[   0.048]    INFO main.(*reserveCommand).run: your reserved service frontend is 'http://x88xujrpk4k3.zrok.quigley.com:8080/'
+```
+
+The `reserve` command creates a service reservation that allows a service to become non-ephemeral. The service token `x88xujrpk4k3` is guaranteed to exist between `backend` executions.
+
+Running a `backend` against a service reservation is done like this:
+
+```
+$ zrok share reserved x88xujrpk4k3
+[   0.005]    INFO main.(*shareReservedCommand).run: sharing target endpoint: 'http://localhost:9090'
+[   0.040]    INFO main.(*shareReservedCommand).run: use this command to access your zrok service: 'zrok access private x88xujrpk4k3'
+^C
+$ zrok share reserved x88xujrpk4k3
+[   0.007]    INFO main.(*shareReservedCommand).run: sharing target endpoint: 'http://localhost:9090'
+[   0.047]    INFO main.(*shareReservedCommand).run: use this command to access your zrok service: 'zrok access private x88xujrpk4k3'
+```
+
+The `share reserved` comand starts a backend process for the service. User-facing and public-facing `frontend` instances are allowed to come and go, just as if the service were ephemeral.
+
+Releasing a reserved service is done with the `zrok release` command:
+
+```
+$ zrok release x88xujrpk4k3
+[   0.056]    INFO main.(*releaseCommand).run: reserved service 'x88xujrpk4k3' released
+```
+