What is ArcGIS Online?

ArcGIS Online is a cloud-based mapping and analysis solution. Use it to make maps, analyze data, and to share and collaborate. Get access to workflow-specific apps, maps and data from around the globe, and tools for being mobile in the field. Your data and maps are stored in a secure and private infrastructure and can be configured to meet your mapping and IT requirements.

For additional information please visit this ESRI site.

The University of Illinois has an ArcGIS Online Organization site that is available to all University Faculty, Staff and Students.

To access this powerful platform visit, https://univofillinois.maps.arcgis.com/home/index.html

Sign In by choosing Enterprise login, University of Illinois.

You will be redirected to your campus authentication page where you can enter your University NetID and Password.

This guide will explain how to sign in to use ESRI ArcGIS Online Platform: Instructions for ESRI Single Sign On

The process will create an account for you and assign the available add-on licenses for:

ArcGIS Pro Advanced (requires installation, please see the free ArcGIS Pro Advanced offer on WebStore)

Extensions include for ArcGIS Pro

3D Analyst
Aviation Airports
Business Analyst
Data Interoperability
Data Reviewer
Defense Mapping
Geostatistical Analyst
Image Analyst
Locate XT
Location Referencing
Maritime Bathymetry
Maritime Charting
Network Analyst
Production Mapping
Publisher
Spatial Analyst
Workflow Manager

App Bundles

ArcGIS Urban Suite

Applications:

ArcGIS Business Analyst Web and Mobile Apps

ArcGIS Community Analyst

ArcGIS Insights

GeoPlanner for ArcGIS

Redistricting Online (on request)

Your account will also be enabled for ESRI Unlimited eLearning. 

U of I ArcGIS Online Portal Rules

Expired user accounts

The University of Illinois ArcGIS online portal maintains active user accounts until the expiration of the member's NetID. UI ESRI member accounts with an expired NetID (the member has left the university and is no longer an active student or staff member), will be removed from the portal. When an account is removed, the membership, entitlements, content and owned groups are permanently deleted. 
Graduated students and departed or retired faculty and staff should transfer their data from the U of I ArcGIS Enterprise portal prior to leaving the university.

Feature Storage Limit

Every user account on the UI ESRI online portal is provided with up to 100mb of Feature Storage. Feature Storage content that is larger than 100mb is subject to automatic removal after 1 month. Feature storage is specific to feature and tile layers hosted in ArcGIS Online.