Sharing a Workspace Without Sharing Data: Fastn UCL’s Smart Multitenancy Setup

Multitenancy is the ability for a single platform instance to serve multiple customers or user groups while keeping their data, tools, and configurations completely separate. It's essential for building scalable, secure systems where each tenant operates independently without needing duplicate infrastructure.

What is Multitenancy in Fastn UCL?

At its core, multitenancy means a single deployment of the Fastn UCL platform can serve multiple tenants such as different customers, business units, or user groups while keeping their data, integrations, and permissions completely separate.

Here’s how Fastn UCL simplifies multitenancy:

Architecture Overview

Fastn UCL’s multitenant architecture is powered by a centralized MCP compatible server that dynamically routes every action based on tenant context:

• Each tenant’s tokens, actions, and configurations are stored separately.

• A shared connector infrastructure ensures reuse and modularity.

• Context aware execution logic ensures that actions are routed only to the tools and permissions associated with the calling tenant.

• The platform supports horizontal scaling, so you can onboard new tenants without worrying about performance impact.

This is achieved without duplicating infrastructure, making Fastn UCL both cost efficient and easy to scale.

How Multitenancy Works — A Simple Example

In many real-world apps, multiple users, like teammates from the same department, collaborate in a shared workspace. For example, Sarah, June, and Emily might all belong to the marketing team and operate under the same Space ID. While they appear to be working in the same environment, Fastn UCL ensures their actions, configurations, and data remain securely separated behind the scenes.

Fastn UCL helps assign each user a distinct tenant context. This means when Sarah connects Slack or Emily accesses Notion, they’re only interacting with their own tools and credentials. No extra logic is needed on your part.

Tenant Context Keeps Everything Organized

When Sarah logs in:

• Fastn UCL recognizes her tenant identity.

• She sees only her tools such as Slack, HubSpot, and Salesforce.

• Any action she triggers like sending a message uses only her configurations.

June and Emily have the same experience, completely independent from each other, even though they are in the same shared workspace.

Same Connectors, Different Usage Per Tenant

All tenants in the workspace have access to the same set of available connectors. But they configure them independently:

• Sarah connects Slack and enables the Post Message action

• June connects Slack as well but disables messaging and only uses status updates

• Emily connects Notion and enables only read-only access to documentation

Each tenant’s integrations, tokens, and actions remain completely isolated.

Fastn UCL Handles the Complexity for You

You do not need to write custom tenant logic or routing. Fastn UCL automatically:

• Reads the tenant ID from every command

• Matches the request to the correct connector configuration

• Executes only permitted actions based on role and workspace level access

• Logs and monitors activity per tenant

This lets your team focus on building features while UCL ensures secure and reliable multitenancy behind the scenes.

Monitor your Tenant Activity

Monitoring in Fastn UCL provides a real-time view into how requests flow through your integration layer, helping you track performance and tenant-specific operations.

Why This Matters

Benefits of Multitenancy in Fastn UCL

• Security
  Complete tenant isolation prevents data leakage or unauthorized access

• Simplicity
  Users manage their own tools and tokens without requiring system wide changes

• Scalability
  One deployment supports thousands of tenants without performance tradeoffs

• Efficiency
  Shared infrastructure reduces costs while maintaining privacy

• Central Management & Ownership
  Admins can oversee all tenants while respecting boundaries

Key Takeaway

If you are building an AI native application that interacts with external tools on behalf of your users, multitenancy is essential.

Fastn UCL gives you a production ready, secure foundation to serve multiple users, organizations, or workspaces all from a single integration layer.

No manual routing. No risk of data exposure.

Focus on features. Fastn takes care of the complexity.