Auth strategy at each growth stage: preseed to enterprise

Auth Strategy at Each Growth Stage: Preseed to Enterprise

As a startup grows, the authentication (auth) strategy must evolve to match the stage of growth. From the preseed phase to enterprise, the decisions made around auth can significantly impact scalability, security, and cost efficiency. Understanding what auth decisions matter at each stage is crucial for founders, CTOs, and senior technology leaders.

Preseed: The Foundation of Auth

At the preseed stage, the ARR is typically below $500K. The auth strategy here is often simple: self-hosted auth with basic features. The key is to avoid over-engineering and to focus on the core needs of the product and team.

Warning: At this stage, it's easy to fall into the trap of using a third-party auth provider that may not scale well as the company grows.

For example, a startup might use a basic OAuth 2.0 setup with a third-party provider like GitHub or Google. While this is functional, it can become a bottleneck as the company scales. It's important to consider self-hosted solutions like Bastionary, which allows for full control over the auth stack and can be scaled as needed.

Seed to Series A: Scaling Auth

As the company moves from seed to series A, the ARR typically ranges from $500K to $5M. At this stage, the auth strategy must begin to scale. The key decisions include whether to use a third-party provider or to self-host, and how to manage licensing, billing, and feature flags.

For example, a company might start with a third-party auth provider but later decide to switch to a self-hosted solution like Bastionary. This allows for greater control over the auth stack and can be integrated with other systems like billing and licensing.

  • Self-hosted auth: Offers full control and can be integrated with other systems.
  • Third-party auth: Can be functional but may become a bottleneck as the company scales.

At this stage, it's also important to consider the integration of auth with other systems like billing and licensing. For example, using Bastionary allows for a unified platform that can manage auth, billing, licensing, and feature flags from a single source.

Series B to Enterprise: Enterprise-Grade Auth

As the company reaches series B and beyond, the ARR can range from $5M to $20M or more. At this stage, the auth strategy must be enterprise-grade. The key decisions include whether to use a self-hosted solution or a third-party provider, and how to manage complex licensing, billing, and feature flag systems.

For example, a company might use a self-hosted solution like Bastionary to manage auth, billing, licensing, and feature flags. This allows for a unified platform that can handle complex use cases and scale with the company.

Key Insight: At this stage, it's important to have a clear understanding of the company's needs and to choose a solution that can scale with the business.

Using a self-hosted solution like Bastionary allows for greater control over the auth stack and can be integrated with other systems like billing and licensing. This is particularly important for companies that are looking to scale to enterprise levels.

In summary, the auth strategy must evolve as the company grows. From the preseed stage to enterprise, the decisions made around auth can significantly impact scalability