Cisco Cisco Identity Services Engine Express License Bundle Libro blanco
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TEI Framework And Methodology
INTRODUCTION
From the information provided during interviews with Cisco
subject matter experts and customers, Forrester has
constructed a Total Economic Impact™ (TEI) framework for
those organizations considering implementing Cisco ISE.
The objective of the framework is to identify the cost,
benefit, flexibility, and risk factors that affect the investment
decision.
subject matter experts and customers, Forrester has
constructed a Total Economic Impact™ (TEI) framework for
those organizations considering implementing Cisco ISE.
The objective of the framework is to identify the cost,
benefit, flexibility, and risk factors that affect the investment
decision.
APPROACH AND METHODOLOGY
Forrester took a multistep approach to evaluate the impact
that Cisco ISE can have on an organization (see Figure 1).
Specifically, we:
that Cisco ISE can have on an organization (see Figure 1).
Specifically, we:
›
Interviewed Cisco marketing, sales, and/or consulting
personnel, along with Forrester analysts, to gather data
relative to Cisco ISE and the marketplace for Cisco ISE.
relative to Cisco ISE and the marketplace for Cisco ISE.
›
Interviewed four organizations currently using Cisco ISE
to obtain data with respect to costs, benefits, and risks.
›
Designed a composite organization based on
characteristics of the interviewed organizations (see
Appendix A).
Appendix A).
›
Constructed a financial model representative of the
interviews using the TEI methodology. The financial
model is populated with the cost and benefit data
obtained from the interviews as applied to the composite
organization.
model is populated with the cost and benefit data
obtained from the interviews as applied to the composite
organization.
Forrester employed four fundamental elements of TEI in
modeling Cisco ISE’s service:
modeling Cisco ISE’s service:
›
Costs.
›
Benefits to the entire organization.
›
Flexibility.
›
Risks.
Given the increasing sophistication that enterprises have
regarding ROI analyses related to IT investments,
Forrester’s TEI methodology serves the purpose of
providing a complete picture of the total economic impact of
purchase decisions. Please see Appendix B for additional
information on the TEI methodology.
regarding ROI analyses related to IT investments,
Forrester’s TEI methodology serves the purpose of
providing a complete picture of the total economic impact of
purchase decisions. Please see Appendix B for additional
information on the TEI methodology.
Analysis
COMPOSITE ORGANIZATION
A total of four interviews were conducted for this study,
involving representatives from the following Cisco
customers:
involving representatives from the following Cisco
customers:
›
A private liberal arts university in the United States, with
more than 2,500 undergraduate and post-graduate
students.
students.
›
A regional drinking water and sewage utility serving 1.6
million people in the Southwestern United States.
›
A major financial services company based in the United
States, providing personal, home, and student loans and
banking and credit card services.
banking and credit card services.
›
A regional credit union in the Southeast United States,
with over 1,000 employees serving more than 400,000
members from 30 branches.
members from 30 branches.
All of the customers interviewed were using Cisco ISE,
which enables inbound and outbound identity management.
which enables inbound and outbound identity management.
FIGURE 1
TEI Approach
TEI Approach
Source: Forrester Research, Inc.