Authentication and Authorization Services That Lock Down Your Product
You need authentication and authorization that works from day one, not a patchwork of libraries and workarounds that breaks the moment you scale. Whether you want to build a secure login system from scratch, hire an authentication and authorization company to fix a leaky auth layer, or bring in experienced auth developers to implement SSO, MFA, and role-based access controls, the core problem is always the same: security cannot be an afterthought. We deliver end-to-end custom authentication development, from identity architecture through to production-grade auth system development for web apps, mobile apps, and APIs. That includes authentication and authorization for SaaS platforms, enterprise portals, and multi-tenant products. Ready for an authentication development quote? Tell us what you are building and where your auth stands today.
Custom authentication and authorization development typically costs between $10,000 and $150,000 depending on complexity, number of user types, and integration requirements. A basic SSO and MFA implementation takes 3 to 6 weeks. Enterprise-grade identity systems with fine-grained authorization take 2 to 6 months.
Core Capabilities and Features
Secure Login That Stops Attackers Cold
Authentication answers one question: is this person who they claim to be? Email and password login, social sign-on (Google, Apple, GitHub, Microsoft), passwordless flows (magic links, passkeys, WebAuthn), and multi-factor authentication are all implemented. The goal is always the same: make login easy for real users and hard for attackers. Passkeys and FIDO2 are supported because the industry is moving there fast. Google already has over 400 million accounts using passkeys. MFA is no longer optional. Stolen credentials caused 22% of all data breaches in 2024, and brute force attacks against web apps nearly tripled year over year.
- Email/password, social sign-on, passwordless flows (magic links, passkeys, WebAuthn), and multi-factor authentication
- TOTP (authenticator apps), push notifications, hardware keys, passkeys, and step-up authentication for sensitive actions
- Passkeys and FIDO2 support because the industry is moving toward phishing-resistant authentication
Fine-Grained Permissions That Scale
Authorization answers a different question: what is this person allowed to do? This is where most products get it wrong. Simple role checks (admin vs. user) work at first. But the moment you have teams, organisations, shared resources, or tiered pricing, basic RBAC breaks down. Authorization systems are built that scale, from straightforward role-based access control to attribute-based policies and relationship-based access for complex multi-tenant SaaS products. If your product needs fine-grained permissions (think: user A can edit document X, but only if they belong to organisation Y and have a premium plan), that is built too.
- Role-based access control (RBAC), attribute-based policies (ABAC), and relationship-based access for multi-tenant SaaS
- Fine-grained permissions scoped by organisation, resource, plan tier, and user attributes
- Tenant-scoped authorization enforced at the API layer and database level with isolation tests on every deploy
Enterprise Identity and Machine-to-Machine Auth
Enterprise customers expect SSO. If they use Okta, Microsoft Entra ID, or Google Workspace internally, they want to log into your product with those same credentials. SAML 2.0 and OpenID Connect federation are implemented so your product can authenticate against any corporate identity provider. For B2B SaaS, this is often the feature that unlocks enterprise deals. Your product also talks to other systems: payment processors, CRMs, analytics tools, partner APIs. OAuth 2.0 client credentials flows for M2M communication, API key management with scoping and rotation, and webhook signature verification are all implemented to ensure every integration is authenticated, authorized, and auditable.
- SAML 2.0 and OpenID Connect federation against Okta, Microsoft Entra ID, Google Workspace, and any corporate identity provider
- OAuth 2.0 client credentials flows for machine-to-machine communication with API key management and rotation
- Webhook signature verification ensuring every integration is authenticated, authorized, and auditable
Why It Matters
If your product handles user data, processes payments, or serves enterprise customers, authentication is not just a feature. It is the foundation everything else sits on. A login system that fails during a demo costs you the deal. An authorization gap that lets a free-tier user access premium features costs you revenue. And a credential breach that exposes customer data? That costs you everything: trust, reputation, and potentially your business. The teams we work with who get the most from the engagement are the ones who treat auth as a first-class product concern, not something to rush through so they can get to the "real" features. Your login screen is the first thing every user sees. Your access controls determine what every user can do. These are real features. Possibly the most important ones. In 2024, 2.8 billion passwords were posted for sale on criminal forums. Credential stuffing is automated, cheap, and relentless. The question is not whether someone will try to break into your product. The question is whether they will succeed.
By the Numbers
22%
Share of all data breaches in 2024 caused by stolen or compromised credentials. Attackers do not break in. They log in. This makes strong authentication the single most impactful security control you can implement.
Source: Verizon DBIR, 2025
2.8B
Passwords posted for sale on criminal forums in 2024. These are not hypothetical threats. They are real credentials, from real breaches, being used in automated attacks right now.
Source: Verizon DBIR, 2025
160%
Increase in compromised credential incidents in 2025 compared to 2024. The surge is driven by AI-powered phishing and the growth of infostealer malware sold as a service on the dark web.
Source: Check Point Research, 2025
400M+
Google accounts now using passkeys (FIDO2/WebAuthn). The industry is moving toward phishing-resistant authentication. Products that do not support passkeys will fall behind.
Source: Google Security Blog, 2024
$4.44M
Average cost of a data breach globally in 2025. Breaches involving stolen credentials take longer to detect and contain, increasing the total cost. Faster detection directly reduces this number.
Source: IBM Cost of a Data Breach Report, 2025
"Authentication is the one feature every user interacts with and most teams underinvest in. When it fails, nothing else matters. Your onboarding funnel, your conversion rate, your enterprise contracts, all of them depend on a login system that works, scales, and does not get breached. Treat it like the critical infrastructure it is."
Technologies
Our Tech Stack
Our Process
How we turn ideas into reality.
Discovery & Identity Mapping
Every user type, role, permission, and access pattern in your product is documented. This includes internal users, external customers, API consumers, and machine-to-machine connections.
Architecture & Protocol Selection
The right protocols are chosen (OAuth 2.0, OpenID Connect, SAML) and the identity architecture is designed. Build custom, integrate a managed provider like Auth0 or Keycloak, or combine both. The decision depends on your product, your compliance needs, and your team.
Implementation
Login flows, session management, MFA, SSO, RBAC or ABAC policies, token handling, and API security are built in sprints. You see working auth every two weeks.
Hardening & Handoff
Security testing is run, attacks are simulated, everything is documented, and you receive a system your team can maintain. If you want ongoing support, that is offered too.
Pricing
Investment Overview
Number of User Types
A product with one user role costs less than one with admins, managers, editors, viewers, API consumers, and guest accounts. Each role multiplies the authorization logic.
Protocol Requirements
Basic email/password is straightforward. Add SSO, SAML, OIDC, M2M auth, and passkeys and the complexity increases significantly.
Build vs. Integrate
Using a managed provider (Auth0, Keycloak, Clerk) reduces upfront engineering but adds ongoing subscription costs and some vendor lock-in. Custom builds cost more initially but give you full control.
Everything we do at Techneth is built around making data move reliably between the systems that matter. If you want to understand our approach before committing, you can read more about our team and how we work. Or explore the full range of digital product and development services we offer, like authentication and authorization. And if you already know what you need, get in touch directly and we will find time to talk.
Frequently Asked Questions
Everything you need to know about this service.
- What is the difference between authentication and authorization?
- Authentication verifies who someone is (login). Authorization determines what they are allowed to do (permissions). Both are critical, but they solve different problems and require different engineering approaches. Most security gaps happen when teams build authentication well but treat authorization as an afterthought.
- Should we build custom auth or use a managed provider like Auth0?
- It depends on your product requirements and team. Managed providers (Auth0, Clerk, Keycloak) get you to market faster and handle protocol complexity. Custom builds give you full control and avoid subscription costs at scale. Many products use a hybrid approach: a managed provider for authentication and custom logic for authorization. We help you decide based on your specific situation.
- How long does it take to implement SSO for enterprise customers?
- A standard SAML 2.0 or OIDC integration takes 2 to 4 weeks with a dedicated team. The engineering is usually straightforward. The time is spent testing against multiple identity providers (Okta, Microsoft Entra ID, Google Workspace, OneLogin) and building the configuration UI that lets your customers connect their provider without needing your help.
- What is the best MFA method to implement?
- Passkeys and hardware security keys are the strongest because they are phishing-resistant. Authenticator apps (TOTP) are the best balance of security and convenience for most products. SMS codes are the weakest widely-used option due to SIM swapping vulnerabilities. The strongest methods your users will actually adopt are implemented, which often means offering multiple options and making the secure one the default.
- Can you fix an existing auth system without rebuilding it?
- Usually, yes. An auth audit (3 to 5 days) identifies vulnerabilities, technical debt, and compliance gaps. From there, fixes are prioritised by severity. Sometimes it makes sense to patch. Sometimes a targeted rebuild of the authorization layer or session management is cheaper than continuous patching. We tell you which path makes more sense.
- How do you handle authorization in a multi-tenant SaaS product?
- Multi-tenant authorization requires ensuring that users in Organisation A can never access data belonging to Organisation B, even if someone misconfigures a role or a developer makes a mistake. Tenant-scoped authorization is implemented at the API layer, enforced at the database level, and integration tests verify isolation on every deploy. This is non-negotiable for B2B SaaS.
Ready to get a quote on your authentication and authorization?
Tell us what you are building and we will put together a scoped proposal within 3 business days. Here is what happens when you reach out:
- 1You fill in the short project brief form (takes 5 minutes).
- 2We review it and come back with initial thoughts within 24 hours.
- 3We schedule a 30 minute call to align on scope, timeline, and budget.
- 4You receive a written proposal with fixed price options.
No commitment required until you are ready. Request your free authentication and authorization quote now.
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