Sponsor: FusionAuth

The 2025 State of Homegrown Authentication Report, sponsored by FusionAuth and Cloudelligent, provides the first deep dive into the tech stacks and team dynamics of organizations building their own identity systems. While many teams opt for in-house solutions for better security and customization, the data reveals significant risks, including the fact that 20% of respondents have experienced a security breach.

Key findings from this inaugural study of 144 IT practitioners include:

• Architecture Trends: 67% of teams build their systems from scratch or roll their own auth server rather than using third-party providers.
• The Tech Stack: Java, JavaScript, and C++ remain the top languages, with 72% of teams running auth in containerized or Kubernetes environments.
• Productivity Benchmarks: Passport.js and Spring Security are rated as the top libraries for both long-term maintenance and initial time to value.
• Team Composition: 60% of teams involve senior-level staff, yet only 23% of those contributors are considered identity specialists.
• Infrastructure Preferences: Roughly half of development teams prefer local environments over SaaS tools for building and testing auth-related flows.

Download the full report to compare your own identity infrastructure against your peers and understand the features, protocols, and challenges shaping the future of custom authentication.

Passwords remain one of the biggest security liabilities in modern applications.

Phishing, credential reuse, and human error continue to drive the majority of data breaches—despite stronger password rules and added MFA layers. Passkeys offer a fundamentally more secure approach to authentication by removing passwords entirely.

This whitepaper explains how passkeys work, why they dramatically reduce common attack vectors, and what development and security teams need to know to implement them successfully.

In this guide, you’ll learn:

• Why traditional passwords and MFA still fail against modern threats
• How passkeys use public-key cryptography to prevent phishing and credential theft
• The difference between passkeys and password-based authentication
• Real-world examples of passkey adoption from leading platforms
• Best practices and considerations for implementing passkeys

If you’re responsible for protecting user identities while maintaining a seamless login experience, this guide provides a clear roadmap to moving beyond passwords.

Download the whitepaper to learn how passkeys improve security—and how to put them into practice.

Modern applications demand authentication that is secure, flexible, and built for developers.

Yet many CIAM platforms introduce unnecessary complexity, opaque pricing, and architectural constraints that slow teams down and increase risk, especially in regulated environments.

This solution brief explains why thousands of engineering teams trust FusionAuth to power authentication at scale. Designed for full control and deployment flexibility, FusionAuth delivers a modern CIAM platform without vendor lock-in or multi-tenant compromises.

In this brief, you’ll learn:

• Why traditional CIAM platforms limit flexibility, transparency, and security
• How single-tenant architecture improves control, isolation, and compliance
• What developer-first authentication looks like in practice
• How teams migrate faster with minimal disruption and lower engineering effort

Whether you’re building for fintech, healthcare, education, or enterprise SaaS, this guide shows how FusionAuth helps teams deploy authentication their way securely, predictably, and at scale.

Building authentication in-house may seem appealing, but for regulated industries, it often introduces serious risk.

Organizations in banking, healthcare, and other highly regulated sectors face increasing pressure to secure sensitive data while meeting complex compliance requirements. DIY authentication systems can quickly become costly, difficult to scale, and hard to keep compliant as regulations evolve.

This white paper explores the top three risks of managing authentication internally, from security vulnerabilities and compliance gaps to operational strain on development teams, and explains why many organizations are turning to specialized authentication providers instead.

Inside, you’ll learn:

• Why DIY authentication struggles to keep pace with evolving regulations
• How security threats and downtime risks increase with in-house systems
• What to look for when evaluating authentication vendors for regulated environments

Whether you’re reassessing an existing auth stack or planning for growth, this guide will help you understand the risks and make a more informed, future-ready decision.

Download the white paper to see why DIY authentication may be holding your organization back.

Why is FusionAuth the Most Customizable Auth Solution on the Market?

Everybody wants a customer login experience that feels like it’s their own. Nobody wants to dedicate the time, effort, and developer resources to make it happen. This is one of the many reasons that developers love FusionAuth. It’s a downloadable, single-tenant CIAM (customer identity and access management) solution that gives you complete control over your authentication. Just us for this webinar to learn why FusionAuth is the most customizable customer login solution on the market.

Today, strong authentication is essential, especially in industries like banking and healthcare. These sectors deal with sensitive data and face strict regulations, making security a top priority. Building your own authentication system might seem like a good idea at first, but it can quickly become a major headache for your development team.

This inaugural State of Homegrown Authentication report, sponsored by FusionAuth and Cloudelligent, is the first to dive into the tech stack of those building authentication themselves.

The State of Homegrown Authentication report paints a clear picture of the teams building their own login systems—from the mix of third-party libraries and auth servers they use (or don’t) to the people dedicated to the task. See the key takeaways.

There are hundreds of articles and blog posts covering OAuth 2.0, but none of them present the modern, real-world use cases. This guide covers OAuth 2.0 from a real-world perspective and covers modern use cases of the specifications.

This guide is different than most of the others out there because it covers all of the ways that we actually use OAuth. It also covers all of the details you need to be an OAuth expert without reading all the specifications or writing your own OAuth server.

This book is based on hundreds of conversations and client implementations as well as our experience building FusionAuth, an OAuth server which has been downloaded over a million times.

Despite the challenges inherent in passwords, authentication has never been more important. Passkeys offer a significant advancement in digital authentication, using the principles of public key cryptography to create a desperately needed authentication alternative to traditional passwords.

Passkeys are an innovative solution to the problem of weak and vulnerable passwords. They utilize public key cryptography to provide a more secure and user-friendly authentication method. By eliminating the need for traditional passwords, passkeys reduce the risk of phishing, social engineering, and brute force attacks.

Why is FusionAuth the Most Customizable Auth Solution on the Market?

Everybody wants a customer login experience that feels like it’s their own. Nobody wants to dedicate the time, effort, and developer resources to make it happen. This is one of the many reasons that developers love FusionAuth. It’s a downloadable, single-tenant CIAM (customer identity and access management) solution that gives you complete control over your authentication. Just us for this webinar to learn why FusionAuth is the most customizable customer login solution on the market.

Today, strong authentication is essential, especially in industries like banking and healthcare. These sectors deal with sensitive data and face strict regulations, making security a top priority. Building your own authentication system might seem like a good idea at first, but it can quickly become a major headache for your development team.

This inaugural State of Homegrown Authentication report, sponsored by FusionAuth and Cloudelligent, is the first to dive into the tech stack of those building authentication themselves.

The State of Homegrown Authentication report paints a clear picture of the teams building their own login systems—from the mix of third-party libraries and auth servers they use (or don’t) to the people dedicated to the task. See the key takeaways.

There are hundreds of articles and blog posts covering OAuth 2.0, but none of them present the modern, real-world use cases. This guide covers OAuth 2.0 from a real-world perspective and covers modern use cases of the specifications.

This guide is different than most of the others out there because it covers all of the ways that we actually use OAuth. It also covers all of the details you need to be an OAuth expert without reading all the specifications or writing your own OAuth server.

This book is based on hundreds of conversations and client implementations as well as our experience building FusionAuth, an OAuth server which has been downloaded over a million times.

Despite the challenges inherent in passwords, authentication has never been more important. Passkeys offer a significant advancement in digital authentication, using the principles of public key cryptography to create a desperately needed authentication alternative to traditional passwords.

Passkeys are an innovative solution to the problem of weak and vulnerable passwords. They utilize public key cryptography to provide a more secure and user-friendly authentication method. By eliminating the need for traditional passwords, passkeys reduce the risk of phishing, social engineering, and brute force attacks.

Why is FusionAuth the Most Customizable Auth Solution on the Market?

Everybody wants a customer login experience that feels like it’s their own. Nobody wants to dedicate the time, effort, and developer resources to make it happen. This is one of the many reasons that developers love FusionAuth. It’s a downloadable, single-tenant CIAM (customer identity and access management) solution that gives you complete control over your authentication. Just us for this webinar to learn why FusionAuth is the most customizable customer login solution on the market.