> ## Documentation Index
> Fetch the complete documentation index at: https://aletyx.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Sign in & Global

> How to get into the Control Tower and use the controls that are available from every screen - the Home page, the top masthead, and the collapsible sidebar.

How to get into the Control Tower and use the controls that are available from every screen - the Home page, the top masthead (About, theme, sign-out), and the collapsible sidebar.

<img src="https://mintcdn.com/aletyx-3353d50c/-SprOR0k3X7EKq06/images/decision-control-tower/login-screen.png?fit=max&auto=format&n=-SprOR0k3X7EKq06&q=85&s=6790743913f9269957c6b7148c91d3d7" alt="Decision Control Tower login screen" width="1914" height="927" data-path="images/decision-control-tower/login-screen.png" />

## How to sign in with SSO

Single sign-on entry for any Tower user when the deployment is wired to an identity provider.

**Prerequisites:**

* A valid corporate account on the configured identity provider (Microsoft Entra or Keycloak).
* SSO must be enabled for your deployment.

**Steps:**

1. Open the Control Tower URL - you land on the Decision Control Tower login screen.
2. Click **Sign in with SSO**.
3. Complete authentication at your identity provider (the "select account" prompt).
4. Wait while the portal finalizes sign-in ("Authenticating, this may take 1 to 3 minutes").

**Verify:** You are redirected into the portal **Home** page and the top masthead appears.

## How to choose a service from the Home page

The Home page (`/`) is the portal's entry point after sign-in.

<img src="https://mintcdn.com/aletyx-3353d50c/-SprOR0k3X7EKq06/images/decision-control-tower/home.png?fit=max&auto=format&n=-SprOR0k3X7EKq06&q=85&s=4783eeb254972edc314b181b30852f46" alt="Decision Control Tower Home" width="1913" height="922" data-path="images/decision-control-tower/home.png" />

**Steps:**

1. From Home, read the hero title and pick one of the three service cards: **Environments**, **Promotions** or **Tasks**.
2. Click a card to open that area.

**Verify:** The selected area opens and the sidebar appears (the sidebar is hidden on Home).

## How to switch between light and dark theme

A personal display preference, saved in your browser.

**Prerequisites:** None.

**Steps:**

1. In the top masthead, click the **settings** (cog) menu.
2. Choose **Light** or **Dark** theme.

**Verify:** The interface switches palette immediately; the choice persists on reload.

## How to view the version (About)

Show the build version and commit identifier - useful when filing support tickets or bug reports.

**Prerequisites:** None.

**Steps:**

1. In the top masthead, click on the info icon.
2. Read **Build Version** and **Commit SHA** in the Decision Control Tower dialog.
3. Close the dialog.

**Verify:** The dialog displays the current build identifiers.

## How to collapse or expand the sidebar

Free up space on any screen that has a sidebar.

**Prerequisites:** Not on the Home page (Home has no sidebar).

**Steps:**

1. Click the sidebar **collapse/expand** toggle.

**Verify:** Collapsed, the sidebar shows icon-only items with tooltips; the state persists across reloads.