Compare authentication options over the same operating period and requirements. Include implementation, migration, infrastructure, support, abuse handling and ongoing maintenance. A working login screen is only one part of that cost.

For an Indian startup, local support, processing locations and delivery requirements can matter. Include verification or messaging integrations only when your product actually needs them.

Define the required service

Capability	Work to include
Sign-in	Selected methods, recovery, rate limits and accessibility
Protocol integration	Callback validation, token checks and client configuration
Session lifecycle	Expiry, rotation, logout and revocation boundaries
Tenant access	Membership, roles and resource authorization
Operations	Monitoring, patching, incident response and support
Privacy	Processing locations, notices, retention and rights workflows

Use the authentication provider scorecard to separate mandatory capabilities from preferences. Keep an existing system in the comparison when replacement would add migration work.

Include India-specific work when applicable

An application that needs an issued document may need a DigiLocker requester integration. A product using Aadhaar offline evidence needs the applicable authorization, verification and data-handling review. A service sending SMS must assess its delivery and DLT obligations.

These are use-case choices. Having Indian users does not make every identity rail mandatory. Choose the minimum evidence and delivery channels the product needs. Document-route comparison, India phone OTP planning.

A managed identity service can provide parts of those integrations. Confirm approval, credential custody and actual production readiness before removing work from your estimate.

Use a transparent cost model

Download the authentication cost worksheet. Enter your own estimates and dated vendor quotes. The worksheet deliberately supplies no invented savings or provider prices.

Evaluation cost = setup + migration + period operations + exit allowance
 
Period operations =
  months * (licence + infrastructure + delivery + maintenance + support)

Use one currency and the same period for each option. Document exchange-rate assumptions if a quote uses another currency. Separate included allowances, taxes and variable charges from fixed fees.

For engineering work, use a loaded cost basis approved by your organization. Record estimated effort beside its assumptions. Do not treat unmeasured future incidents as a precise cost forecast.

Compare ownership as well as fees

Option	Work your team retains	When it can fit
Custom implementation	Design, security, maintenance and operations	Identity behavior is a core differentiator and the team can operate it
Self-hosted identity service	Hosting, upgrades, availability and configuration	The team needs deployment control and can maintain the platform
Managed provider	Integration, application policy and vendor oversight	The team values reduced platform operations and supported capabilities fit

An open-source licence does not remove operating work. A managed subscription does not remove application authorization or incident responsibilities. Use the actual architecture rather than assuming a universal winner.

For concrete choices, review the Keycloak comparison and Auth0 evaluation. Check current official documentation and quotes before entering their terms in the worksheet.

Test the expensive failure paths

An evaluation should include recovery, provider outage, key rotation, a removed administrator and a disputed account link. Ask who investigates each failure and which evidence is available.

Select a representative application flow.
Test the normal sign-in path.
Test recovery and credential replacement.
Test session and token revocation.
Test a tenant or role change.
Record the operational owner for each failure.
Add unresolved work to the estimate.

The identity migration runbook helps assess transition work. The emergency-access guide helps evaluate an administrator outage.

Keep residency and compliance claims specific

Record where each data category is processed, including logs, backups and optional providers. Regional primary infrastructure is one fact within that map. It does not establish an unrestricted end-to-end residency guarantee.

Similarly, an identity audit event can support an application review. It does not automatically contain a complete consent record or prove a legal obligation is satisfied. Assign those duties to their actual owners.

Review the estimate with NamoID

NamoID offers hosted customer identity with primary production infrastructure in AWS Mumbai. Confirm optional provider processing, required controls and current capability availability for your use case.

Our engineers can help review the integration work and operating assumptions. Share your stack, expected usage and required methods in Slack for an early response. Contact the NamoID team