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September 20, 2006 Comparing The ROI Of SaaS Versus On-Premise Using Forrester's TEI™ Approachby R "Ray" Wang with Eric G. Brown, Jon Erickson, Will McEnroe, Emily Van Metre |
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Executive Summary
While adoption of software-as-a-service (SaaS) has become widely accepted in CRM, usage in ERP continues to play catch-up. Consequently, firms evaluating various deployment options should consider evaluating both SaaS as well as traditional on-premise options beyond the pure cost tradeoffs. Depending on the business models and economic drivers, differences in business benefits, flexibility, and risk are important when comparing these deployment options. This document, the third in a series, builds upon the on-premise and SaaS models of the first two reports and evaluates four scenarios using Forrester's Total Economic Impact™ (TEI) methodology for 50, 100, 250, and 500 users.
TABLE OF CONTENTS
- Applying The TEI Model To SaaS Versus On-Premise Evaluations
RECOMMENDATIONS
- Evaluate SaaS Versus On-Premise Using An ROI Approach
WHAT IT MEANS
- TEI Depends Not Only On Number Of Users But Also On Number Of Sites
- Related Research Documents
Features
Scenario No. 1: Medium-Small Business With 100 To 249 Employees And 50 Users
Scenario No. 2: Medium-Small Business With 250 To 499 Employees And 100 Users
Scenario No. 3: Medium-Large Business With 250 Users
Scenario No. 4: Large Enterprise With 2,500 Employees And 500 Users
This is an excerpt
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