Add service account support for organization endpoints and update docs images

docs/api-reference/overview/authentication.mdx

@@ -1,25 +1,51 @@
 ---
 title: "Authentication"
+description: "How to authenticate with the Infisical Public API"
 ---
 
-To authenticate requests with Infisical, you can either use an API Key or [Infisical Token](../../../getting-started/dashboard/token); certain endpoints will accept either one or both. 
-- API Key: This general-purpose authentication token provides user access to most endpoints in this reference.
-- [Infisical Token](../../../getting-started/dashboard/token): This authentication token (also referred to as the service token) is scoped to a specific project and environment and used for CRUD secret operations.
+## Essentials
+
+The Public API accepts multiple modes of authentication being via API Key, Service Account credentials, or [Infisical Token](../../../getting-started/dashboard/token).
+
+- API Key: Provides full access to all endpoints representing the user.
+- [Service Account](): Provides scoped access to an organization and select projects representing a machine such as a VM or application client. 
+- [Infisical Token](../../../getting-started/dashboard/token): Provides short-lived, scoped CRUD access to the secrets of a specific project and environment.
 
 <AccordionGroup>
 <Accordion title="API Key">
+The API key mode uses an API key to authenticate with the API.
+
 To authenticate requests with Infisical using the API Key, you must include an API key in the `X-API-KEY` header of HTTP requests made to the platform. 
 
 You can obtain an API key in User Settings > API Keys
 
 ![API key dashboard](../../images/api-key-dashboard.png)
 ![API key in personal settings](../../images/api-key-settings.png)
+</Accordion>
+<Accordion title="Service Account">
+The Service Account mode uses an Access Key to authenticate with the API and a Public Key and Private Key to perform any cryptographic operations.
+
+To authenticate requests with Infisical using the Access Key, you must include it in the `Authorization` header of HTTP requests made to the platform with the value `Bearer <access_key>`.
+
+You can create a Service Account in Organization Settings > Service Accounts
+
 </Accordion>
 <Accordion title="Infisical Token">
-To authenticate requests with Infisical using the Infisical Token, you must include your Infisical Token in the `Authorization` header of HTTP requests made to the platform with the value `Bearer st.<rest_of_your_infisical_token>`.
+
+The Infisical Token mode uses an Infisical Token to authenticate with the API.
+
+To authenticate requests with Infisical using the Infisical Token, you must include your Infisical Token in the `Authorization` header of HTTP requests made to the platform with the value `Bearer <infisical_token>`.
 
 You can obtain an Infisical Token in Project Settings > Service Tokens.
 
 ![token add](../../images/project-token-add.png)
 </Accordion>
-</AccordionGroup>
+</AccordionGroup>
+
+## Use Cases
+
+Depending on your use case, it may make sense to use one or another authentication mode:
+
+- API Key (not recommended): Use if you need full access to the Public API without needing to access any secrets endpoints (because API keys can't encrypt/decrypt secrets).
+- Service Account (recommeded): Use if you need access to multiple projects and environments in an organization; service accounts can generate short-lived access tokens, making them useful for some complex setups.
+- Service Token (recommeded): Use if you need short-lived, scoped CRUD access to the secrets of a specific project and environment.

docs/api-reference/overview/introduction.mdx

@@ -2,11 +2,17 @@
 title: "Introduction"
 ---
 
-Infisical's REST API provides users an alternative way to programmatically access and manage
+Infisical's Public (REST) API provides users an alternative way to programmatically access and manage
 secrets via HTTPS requests. This can be useful for automating tasks, such as
 rotating credentials, or for integrating secret management into a larger system.
 
-With the REST API, users can create, read, update, and delete secrets, as well as manage access control, query audit logs, and more.
+With the Public API, users can create, read, update, and delete secrets, as well as manage access control, query audit logs, and more.
+
+<Warning>
+  We highly recommend using one of the available SDKs when working with the Infisical API.
+  
+  If you decide to make your own requests using the API reference instead, be prepared for a steeper learning curve and more manual work.
+</Warning>
 
 ## Concepts
 

docs/getting-started/dashboard/organization.mdx

@@ -24,6 +24,14 @@ To add a member to your organization, scroll down to the "Organization Members"
   projects by default.
 </Note>
 
+## Service Accounts
+
+Service accounts represent machine identities such as VMs or application clients that can authenticate with Infisical. They can be provisioned read/write permissions for project(s) and environment(s).
+
+To add a service account to your organization, scroll down to the "Service Accounts" section and create a service account. Afterwards, you can press on the edit button beside the service account to provision it permissions.
+
+![organization service accounts](../../images/organization-service-accounts.png)
+
 ## Incident contacts
 
 Incident contacts of an organization are alerted if anything abnormal is detected within the operations of an organization.

docs/getting-started/dashboard/project.mdx

@@ -25,16 +25,16 @@ In most cases, environment variables belong to specific environments: developmen
 
 ![project environment](../../images/project-environment.png)
 
-### Personal/Shared scoping
+### Personal overrides
 
-Every environment variable is classified as either personal or shared.
+Every environment variable value can be overriden with a custom value.
 
-- A personal environment variable is one created by a user of a project to be available for that user only.
-- A shared environment variable is one created by a user of a project to be available for other users of the project.
+- An overriden value can only be read and accesssed by the user that overrode the original shared value. 
+- A (default) shared value can be read and accesssed by other users in a project.
 
-You can toggle the classification of an environment variable by pressing on its settings:
+You can turn overrides on/off by toggling the override/branch icon:
 
-![project variable toggle open](../../images/project-envar-toggle-open.png)
+![project variable toggle open](../../images/project-envar-override.png)
 
 ### Search
 
@@ -42,12 +42,6 @@ You can search for any environment variable by its key.
 
 ![project search](../../images/project-search.png)
 
-### Sort
-
-You can sort environment variables alphabetically by their keys.
-
-![project sort](../../images/project-sort.png)
-
 ### Hide/Un-hide
 
 You can hide or un-hide the values of your environment variables. By default, the values are hidden for your privacy.

docs/getting-started/quickstart.mdx

@@ -9,7 +9,7 @@ These examples demonstrate how to store and fetch environment variables from [In
 
 1. Login or create an account at `app.infisical.com`.
 2. Create a new project.
-3. Populate your environment variables as in the image below.
+3. Keep the default environment variables or populate them as in the image below.
 
 ![project quickstart](../images/project-quickstart.png)