Please help me plan an SSO rollout for our app. We need simple setup for admins, support for Google Workspace, and role-based access.

Here’s a practical SSO rollout plan optimized for:

• simple admin setup
• Google Workspace support
• role-based access control (RBAC)

I’ll lay this out as a phased plan you can actually execute.

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1) Define the target SSO model

Recommended approach

Use SAML 2.0 as the primary enterprise SSO protocol, with Google Workspace as the first identity provider (IdP).

Why:

• Google Workspace supports SAML well
• Most admin-friendly for enterprise customers
• Easy to map into existing app roles/permissions
• Familiar for IT admins

Optional add-on

Consider OIDC later if you want:

• easier dev experience for modern apps
• self-serve login flows
• future support for non-enterprise identity providers

But if your immediate goal is Google Workspace + simple enterprise setup, start with SAML.

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2) Define the user experience

You’ll want two distinct flows:

A. Admin setup flow

Admins should be able to:

1. Enter their domain name
2. Verify ownership of the domain
3. Download/copy your SAML config details into Google Admin Console
4. Test login
5. Turn on enforcement for the domain

B. End-user login flow

Users should:

1. Go to your app
2. Enter email or be redirected via domain discovery
3. Authenticate via Google Workspace
4. Be assigned an app role automatically based on claims/groups
5. Land in the correct workspace/project/org context

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3) Admin setup design for simplicity

Make setup as guided as possible.

Recommended setup steps in your admin UI

Step 1: Add organization domain

• Admin enters company.com
• You send a verification email or DNS TXT challenge
• Confirm domain ownership before enabling SSO

Step 2: Create SSO connection

Show:

• SP Entity ID
• ACS URL
• NameID format
• Optional certificate fingerprint / signing cert
• Optional RelayState instructions

Step 3: Google Workspace configuration instructions

Provide a copy-paste guide for Google Admin Console:

• Create custom SAML app
• Set ACS URL / Entity ID
• Upload IdP metadata from Google
• Map NameID to primary email
• Enable app for the relevant org unit/group

Step 4: Test connection

• “Test SSO” button
• Log results clearly
• Show exact error if login fails

Step 5: Activate SSO

• Enable for a domain, org, or group
• Option to keep password login as fallback initially
• Option to enforce SSO later

Good admin UX features

• Guided wizard
• Copy buttons
• Pre-filled defaults
• Inline validation
• Status indicators: “not configured”, “verified”, “testing”, “active”

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4) Identity and account linking strategy

This is critical to avoid duplicate accounts.

Recommended account key

Use a stable identifier like:

• email as the initial matching key
• plus IdP subject ID for durable linkage once authenticated

Linking rules

1. If email matches an existing user, link SSO identity
2. If no user exists, create user automatically if domain is allowed
3. If user already exists but from a different domain/IdP, require admin approval or verified matching rules

Avoid

• auto-merging on display name
• relying only on mutable attributes
• using unverified email domains

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5) Role-based access design

You’ll want two layers:

• authentication = who the user is
• authorization = what they can do

Recommended role model

Start simple:

• Owner/Admin
• Member
• Read-only / Viewer (if needed)

Role assignment sources

Use one or more of:

1. SAML group claims
2. Email domain rules
3. Manual assignment in your app
4. SCIM provisioning later for enterprise automation

Google Workspace mapping options

Google SAML is good for sign-in, but for RBAC you may also want:

• Google Groups mapping to app roles
• Or admin-managed role assignment in your app after login

Best practical approach

For rollout:

• Use Google SAML for authentication
• Map roles in your app using:
  • a configurable email domain rule for baseline access
  • optionally group-based role claims if available
• Let org admins manage roles inside your app initially

That keeps setup simpler than requiring perfect group sync on day one.

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6) Support Google Workspace specifically

What to support

• SAML SSO via Google Workspace
• Primary email as NameID
• Group membership as optional claim source
• Domain-based login discovery
• Multiple org units or domains if needed

Setup checklist for Google

Your docs should include:

• Create SAML app in Google Admin
• Set ACS URL and Entity ID
• Download Google IdP metadata
• Assign users/groups to the app
• Ensure email addresses are verified and match your app
• Test in incognito with a dedicated test user

Common Google-specific gotchas

• NameID mismatch due to alias emails
• Apps assigned to wrong org unit
• Group claim limitations depending on configuration
• Domain-wide expectations vs actual user assignment in Google Admin

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7) Security requirements

Minimum security controls:

• Require signed SAML assertions
• Validate audience, issuer, recipient, timestamps
• Enforce clock skew limits
• Support certificate rotation
• Log auth events and failures
• Use least-privilege role defaults
• Provide admin audit trail

Important policies

• Password login fallback: decide whether to allow it
• Session duration: configurable
• MFA: inherited from Google Workspace, but document that clearly
• Just-in-time provisioning: only for verified domains

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8) Rollout phases

Phase 1: Internal alpha

Goal: prove login works reliably

• Single test Google Workspace tenant
• Basic SAML login
• Account linking by email
• Minimal role mapping
• Audit logging

Success criteria:

• Users can sign in
• No duplicate accounts
• Admin can configure without engineering help

Phase 2: Private beta

Goal: validate setup experience

• 3–5 design partners
• Guided setup wizard
• Domain verification
• Basic RBAC
• Clear error messages
• Manual support available

Success criteria:

• Admins complete setup in under 30 minutes
• Support tickets are mostly about documentation, not broken auth
• Users can access correct roles on first login

Phase 3: General availability

Goal: scale self-serve onboarding

• Better domain discovery
• More robust diagnostics
• Role mapping options
• Optional SCIM roadmap
• Monitoring and alerting

Success criteria:

• Low-touch setup
• High successful login rate
• Few support escalations

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9) Documentation you should ship

Create three docs:

For admins

• “Set up SSO with Google Workspace”
• Step-by-step screenshots
• Required fields
• Troubleshooting guide
• FAQ

For end users

• “How to sign in with your company account”
• What to do if redirected incorrectly

For internal support

• SSO troubleshooting runbook
• Common error codes
• Metadata/cert rotation process
• Account linking policy

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10) Metrics to track

Track:

• SSO setup completion rate
• Time to first successful login
• Login success/failure rate
• Top setup errors
• Role assignment mismatch rate
• Support tickets per tenant

Useful events:

• domain_verified
• sso_connection_created
• saml_metadata_uploaded
• first_successful_sso_login
• role_assigned
• sso_login_failed

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11) Recommended implementation scope

Must-have v1

• Google Workspace SAML SSO
• Domain verification
• SSO-enforced login option
• Basic RBAC
• Account linking
• Audit logging

Nice-to-have v2

• SCIM user provisioning
• Group sync
• Multiple IdPs per org
• OIDC support
• Just-in-time role mapping from claims

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12) Suggested rollout decision

If you want the simplest path:

1. Start with Google Workspace SAML
2. Require domain verification
3. Use email-based account linking
4. Keep roles simple at first
5. Add SCIM/group sync after the first customers prove the workflow

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If you want, I can also turn this into:

• a 2-week implementation plan
• a product requirements document
• or a customer-facing SSO setup guide for Google Workspace.