docs: add hotfix and rollback release processes

docs/deployment/.pages

@@ -3,5 +3,7 @@ nav:
   - infrastructure.md
   - secrets.md
   - release.md
+  - hotfix.md
+  - rollback.md
   - troubleshooting.md
   - workflows.md

docs/deployment/hotfix.md

@@ -0,0 +1,45 @@
+# Making a hotfix release
+
+This list outlines the manual steps needed to make a hotfix release of the
+`benefits` app.
+
+If `main` contains in-progress work that is not yet ready for a release but a simple code fix
+is needed in production, a separate process to test the changes before deploying to production must be undertaken.
+This is called a hotfix release. Typically, a hotfix release involves a simple code change that can be quickly implemented, in contrast to a [rollback release](./rollback.md), which generally requires more complex code changes which take more time to implement.
+
+[Start a new Release on Github](https://github.com/cal-itp/benefits/issues/new?labels=release&template=release.yml&title=Make+a+Release){ .md-button }
+
+## 0. Create a temporary hotfix branch from the latest release tag
+
+```bash
+git checkout -b <hotfix-branch> <release-tag>
+```
+
+Replace `<hotfix-branch>` with the hotfix branch name and `<release-tag>` with the latest release tag.
+
+## 1. Fix whatever issue is wrong using the hotfix branch
+
+Commit the code changes that fix the issue that prompted the hotfix.
+
+## 2. Tag the HEAD of the hotfix branch with a release tag
+
+```bash
+git tag -a YYYY.0M.R
+```
+
+Git will open your default text editor and prompt you for the tag annotation. For the tag annotation,
+use the release tag version and close the text editor.
+
+## 3. Push the tag to GitHub to kick off the hotfix
+
+```bash
+git push origin YYYY.0M.R
+```
+
+## 4. [Generate release notes](https://docs.github.com/en/repositories/releasing-projects-on-github/automatically-generated-release-notes)
+
+Edit release notes with additional context, images, animations, etc. as-needed and link to the Release process issue.
+
+## 5. Merge into `main` for the next release
+
+Create a PR to merge the changes from the hotfix branch into `main` for the next release.

docs/deployment/rollback.md

@@ -0,0 +1,36 @@
+# Making a rollback release
+
+This list outlines the manual steps needed to make a rollback of the
+`benefits` app.
+
+If a change is deployed to the app that makes it fail to start, making a rollback
+will deploy the app to a known working state again.
+
+[Start a new Release on Github](https://github.com/cal-itp/benefits/issues/new?labels=release&template=release.yml&title=Make+a+Release){ .md-button }
+
+## 0. Create a temporary branch from the last known good release tag
+
+```bash
+git checkout -b <rollback-branch> <release-tag>
+```
+
+Replace `<rollback-branch>` with the rollback branch name and `<release-tag>` with the last known good release tag.
+
+## 1. Tag the HEAD of the rollback branch with a rollback release tag
+
+```bash
+git tag -a YYYY.0M.R
+```
+
+Git will open your default text editor and prompt you for the tag annotation. For the tag annotation,
+use the rollback release tag version and close the text editor.
+
+## 2. Push the tag to GitHub to kick off the rollback
+
+```bash
+git push origin YYYY.0M.R
+```
+
+## 3. [Generate release notes](https://docs.github.com/en/repositories/releasing-projects-on-github/automatically-generated-release-notes)
+
+Edit release notes with additional context, images, animations, etc. as-needed and link to the Release process issue.