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GitHub Flow

GitHub Flow is a lightweight, continuous delivery-oriented workflow created by GitHub and used by GitHub itself to deploy hundreds of times per day. It strips Git Flow's complexity down to the essentials: one long-lived branch (main), short-lived feature branches, Pull Requests, and deployment before merging. Its simplicity makes it the most popular workflow for SaaS web applications and teams that practice continuous deployment.

The 6-step cycle

Branch — create a descriptively named branch from main.
Commit — make small, focused commits on the branch.
Pull Request — open a PR as soon as the first commit is pushed (even as a draft).
Review — team members review, comment, and approve the PR.
Deploy — deploy the branch to a staging/production environment to verify it works.
Merge — once verified in production (or staging), merge the PR into main.

GitHub Flow diagram

GitHub Flow topology

Text

main:  A ── B ──────────────── M1 ─────────── M2 ──▶
                   │              ↑              ↑
                   │           (merge)        (merge)
                   │              │              │
feature/auth:      └── C ── D ── E              │
                              (deployed to ──────┘
                               staging, verified)
feature/search:           └── F ── G ── H ──────┘
                                     (deployed &
                                      verified)

main is ALWAYS deployable.
Features are deployed BEFORE merging into main.

Complete command walkthrough

Step 1: Create a branch from main

Bash

# Always start from a fresh main
git switch main
git pull origin main

# Create a descriptive branch
git switch -c feature/add-user-avatars
# Switched to a new branch 'feature/add-user-avatars'

Step 2: Commit your work

Bash

# Make small, focused commits
git add src/components/Avatar.tsx
git commit -m "feat: add Avatar component with size variants"

git add src/hooks/useAvatar.ts
git commit -m "feat: add useAvatar hook for Gravatar fallback"

git add tests/Avatar.test.tsx
git commit -m "test: add Avatar rendering tests"

Step 3: Push and open a Pull Request

Bash

# Push the branch
git push -u origin feature/add-user-avatars

# Open a PR (GitHub CLI):
gh pr create   --title "Add user avatar support"   --body "Adds Avatar component with Gravatar fallback. Closes #45."   --draft   # Start as draft while still working

# When ready for review, mark it ready:
gh pr ready

Step 4: Review and address feedback

Bash

# After review comments arrive, fix them:
git add src/components/Avatar.tsx
git commit -m "fix: handle missing Gravatar email gracefully"

# Push the updated branch — PR updates automatically
git push origin feature/add-user-avatars

Step 5: Deploy the branch to staging/production

Bash

# GitHub Actions example — deploy branch to staging when PR is opened
# .github/workflows/deploy-preview.yml:
# on: [pull_request]
# jobs:
#   deploy:
#     runs-on: ubuntu-latest
#     steps:
#       - uses: actions/checkout@v4
#       - run: npm ci && npm run build
#       - run: ./deploy.sh staging ${{ github.head_ref }}

# Heroku Review Apps, Vercel Preview, Netlify Preview do this automatically.

# Verify the feature works correctly in the deployed environment

Step 6: Merge after verification

Bash

# Merge via GitHub UI (squash, rebase, or merge commit)
# or via CLI:
gh pr merge feature/add-user-avatars --squash --delete-branch
# ✓ Squashed and merged pull request #46
# ✓ Deleted branch 'feature/add-user-avatars'

# Pull the updated main locally
git switch main
git pull origin main

Continuous deployment friendly

GitHub Flow is designed around the idea that main is always deployable. In many teams, merging to main automatically triggers a deployment pipeline. The "deploy before merge" step (step 5) is what makes this safe — you verify the change works in production context before it permanently enters the main branch.

Automated deployment pipeline on merge to main

Text

Developer merges PR to main
         │
         ▼
GitHub Actions / CircleCI / Jenkins triggered
         │
         ├── Run unit tests
         ├── Run integration tests
         ├── Build production artifacts
         └── Deploy to production
                  │
                  ▼
           Production updated ✓

GitHub Flow vs Git Flow

Dimension	GitHub Flow	Git Flow
Long-lived branches	1 (main)	2 (main + develop)
Release branches	No	Yes (release/*)
Hotfix branches	No (fix via a PR like any other change)	Yes (hotfix/*)
Feature branches	Yes	Yes
Deployment trigger	Branch deploy before merge	Merge to main (tagged)
Release cadence	Continuous (many per day)	Scheduled (per sprint or milestone)
Versioned releases	Rarely (or via tags on main)	Yes — central to the model
Complexity	Low	High
Best for	SaaS, web apps, continuous delivery	Libraries, apps with versioned releases

Who uses GitHub Flow

GitHub itself — the company that created this workflow uses it to deploy multiple times per day.
Most SaaS web application teams — single production environment, continuous deployment.
Startups and small-to-medium teams — the simplicity reduces coordination overhead.
Open-source projects — many popular projects (including some large ones) use this model.
Teams adopting CI/CD — GitHub Flow works naturally with automated testing and deployment pipelines.

Handling hotfixes in GitHub Flow

GitHub Flow has no dedicated hotfix branch type. An emergency fix is just another branch from main, with the same PR and review process — but with urgency. Because main is always deployable, hotfixes are less stressful: you never need to cherry-pick across multiple branches.

Emergency fix in GitHub Flow

Bash

# Same process as any other change — just faster
git switch main
git pull origin main
git switch -c fix/critical-payment-bug

git commit -m "fix: prevent null pointer in checkout flow"
git push -u origin fix/critical-payment-bug

# Open PR, get expedited review, merge
gh pr create --title "URGENT: fix payment null pointer" --body "Fixes #99"
# (after quick review and CI pass)
gh pr merge --squash --delete-branch

GitHub Flow requires a strong deployment pipeline

The "deploy before merge" step is central to GitHub Flow's safety model. If you do not have a way to deploy feature branches to a staging or preview environment, you lose the main advantage of this workflow. Make sure your CI/CD infrastructure supports branch deploys before adopting GitHub Flow.

Use Draft PRs from the start

In GitHub Flow, it is common to open a Draft PR as soon as you push your first commit. This gives teammates visibility into your work early, enables discussion before the implementation is complete, and makes CI run on every commit from the beginning.