Research report on business process
Research paper The development of a supply chain management process maturity model using the concepts of business process orientation
Archie Lockamy III and
Kevin McCormack
The authors
Archie Lockamy III is Professor of Operations Management in the School of Business, Samford University, Birmingham, Alabama, USA. Kevin McCormack is an Adjunct Professor in the School of Business, University of Alabama at Birmingham, Birmingham, Alabama, USA. He is also President of DRK Research and Consulting LLC, Birmingham, Alabama, USA.
Keywords
Supply chain management, Process management, Performance management, Modelling
Abstract
The concept of process maturity proposes that a process has a lifecycle that is assessed by the extent to which the process is explicitly defined, managed, measured and controlled. A maturity model assumes that progress towards goal achievement comes in stages. The supply chain maturity model presented in this paper is based on concepts developed by researchers over the past two decades. The Software Engineering Institute has also applied the concept of process maturity to the software development process in the form of the capability maturity model. This paper examines the relationship between supply chain management process maturity and performance, and provides a supply chain management process maturity model for enhanced supply chain performance.
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Introduction
Today’s organizations are faced with increasing
levels of global competition, demanding customers
and employees, shrinking product lifecycles and
decreasing acceptable response times.
Competition in many industries has been based
mainly on strategic assets (investments in scale,
scope, brand equity) and on the ability to deploy
these assets. However, competition is now based
on capabilities, or “complex bundles of skills and
accumulated knowledge, exercised through
organizational processes” (Day, 1994).
Corporations are also extending outside their legal
boundaries as a normal way of organizing and
forming competitive networks of companies.
Thus, organizations need to develop strategically
aligned capabilities not only within the company
itself, but also among the organizations that are
part of its value-adding networks.
Owing to this new business approach, many
firms are now viewing processes as strategic assets.
Under the new approach, organizations are no
longer viewed as a collection of functional areas,
but as a combination of highly integrated processes
(Buxbaum, 1995; Hammer and Champy, 1993;
Hammer, 1996, 1999). Additionally, processes are
now viewed as assets requiring investment and
development as they mature. Thus, the concept of
process maturity is becoming increasingly
important as firms adopt a process view of the
organization. This concept proposes that a process
has a lifecycle that is assessed by the extent to
which the process is explicitly defined, managed,
measured and controlled. The process maturity
concept is analogous to that of a lifecycle, which
occurs in developmental stages. This concept also
implies growth in the areas of process capability,
richness and consistency across the entire
organization (Dorfman and Thayer, 1997).
The purpose of this paper is to present research
findings that suggest a significant relationship
between supply chain management maturity and
performance. In addition, the paper provides a
supply chain process maturity model that can be
used to help facilitate enhanced supply chain
performance. Contained in this paper is: . a discussion on the concepts of business
process orientation and process maturity; . a discussion on the relationship between
business process orientation, process maturity
and supply chain management; . the business process orientation maturity
model; . the supply chain management process
maturity model;
Supply Chain Management: An International Journal
Volume 9 · Number 4 · 2004 · pp. 272-278
q Emerald Group Publishing Limited · ISSN 1359-8546
DOI 10.1108/13598540410550019
272
. statistical results relating supply chain
management process maturity and
performance; and . conclusions regarding the relationship
between supply chain process maturity and
performance.
Business process orientation
The concept of business process orientation
(BPO) is based upon the work of Deming (Walton,
1986), Porter (1985), Davenport and Short
(1990), Hammer (1996, 1999), Hammer and
Champy (1993), Grover et al. (1995) and Coombs
and Hull (1996). This body of work suggests that
firms can enhance their overall performance by
adopting a “process view” of the organization.
Although many firms have adopted the BPO
concept, little to no empirical data exists to
substantiate its effectiveness in facilitating
improved business performance. McCormack and
Johnson (2000) conducted an empirical study to
explore the relationship between BPO and
enhanced business performance. The research
results showed that BPO is critical in reducing
conflict and encouraging greater connectedness
within an organization, while improving business
performance. Moreover, companies with strong
measures of BPO showed better overall business
performance. The research also showed that high
BPO levels within organizations led to a more
positive corporate climate, illustrated through
better organizational connectedness and less
internal conflict. In addition, the study revealed
the following key BPO elements: . process management and measurement –
measures that include aspects of the process
such as output quality, cycle time, process cost
and variability, as compared to the traditional
accounting measures; . process jobs – jobs that focus on processes as
opposed to functions, and are cross-functional
in responsibility; and . process view – the cross-functional, horizontal
picture of a business involving elements of
structure, focus, measurement, ownership
and customers.
Process maturity
The concept of process maturity proposes that a
process has a lifecycle that is assessed by the extent
to which the process is explicitly defined,
managed, measured and controlled. It also implies
growth in process capability, richness and
consistency across the entire organization
(Dorfman and Thayer, 1997). As an organization
increases its process maturity, institutionalization
takes place via policies, standards and
organizational structures (Hammer, 1996).
The process maturity concept has been
developed and tested relative to the software
development process (Harter et al., 2000) and the
project management process (Ibbs and Kwak,
2000). However, there have been no published
studies to date which examine the concept relative
to supply chain management. In investigating the
maturity concept relative to the software
development process, the researchers used an
assessment instrument developed by the Software
Engineering Institute (SEI) (2002) along with
outcome measurements (e.g. quality and cycle time)
developed specifically for the study. The researchers
found that the net effect of process maturity was a
reduction in overall software development cycle
time and software development effort.
In examining the process maturity concept
relative to the project management process, Ibbs
and Kwak (2000) used the basic concepts of the SEI
model and developed specific questions from the
Project Management Institute’s Body of
Knowledge. This maturity model represented five
levels of project management maturity. The model
was then used to examine the level of maturity
across several industries. The relationship between
maturity and performance was examined through
interviews with participants. Although statistical
relationships between maturity and performance
were not examined, the interview results indicated a
general acceptance that higher levels of project
management maturity resulted in improved project
performance.
As organizations increase their process
maturity, institutionalization takes place via
policies, standards and organizational structures
(Hammer, 1996). Building an infrastructure and a
culture that supports BPO methods, practices and
procedures, enables process maturity to survive
and endure long after those who have created it.
Continuous process improvement, an important
aspect of BPO, is based on many small
evolutionary rather than revolutionary steps.
Continuous process improvement serves as the
energy that maintains and advances process
maturity to new maturity levels. The proposed
relationship between process maturity and BPO is
shown in Figure 1.
As processes mature, they move from an
internally-focused perspective to an externally-
focused system perspective. A maturity level
represents a threshold that, when reached, will
institutionalize a total systems view necessary to
achieve a set of process goals (Dorfman and
Thayer, 1997). Achieving each level of maturity
establishes a higher level of process capability for
an organization. This capability, as shown in
Figure 2, can be defined by:
Development of a supply chain management process maturity model
Archie Lockamy III and Kevin McCormack
Supply Chain Management: An International Journal
Volume 9 · Number 4 · 2004 · 272-278
273
Figure 1 Relationship between BPO and process maturity
Figure 2 Relationship between process capability and maturity
Development of a supply chain management process maturity model
Archie Lockamy III and Kevin McCormack
Supply Chain Management: An International Journal
Volume 9 · Number 4 · 2004 · 272-278
274
. control – defined as the difference between
targets and actual results, noting the variation
around these targets; . predictability – measured by the variability in
achieving cost and performance objectives;
and . effectiveness – the achievement of targeted
results and the ability to raise targets.
The BPO maturity model
A BPO maturity model was developed based on
the concepts of process maturity, BPO, and the
capability and maturity model developed by the
Software Engineering Institute at Carnegie Mellon
University (SEI, 2002). The model and a
description of each maturity level are shown in
Figure 3.
It is important to note that trying to skip
maturity levels is counter-productive, since each
level builds a foundation from which to achieve the
subsequent level. An organization must evolve
through these levels to establish a culture of
process excellence.
The SCM maturity model
Based on the BPO maturity model illustrated in
Figure 3, discussions with supply chain experts
and practitioners, and supply chain survey data
organized by variables relating to different
maturity levels, an SCM maturity model was
developed as illustrated in Figure 4. The model
conceptualizes how process maturity relates to the
supply chain operations reference (SCOR)
framework. The SCOR framework was chosen to
conceptualize the supply chain management
maturity model, owing to its process orientation
and wide adoption by the supply chain academic
and practitioner communities. The five stages of
maturity show the progression of activities
toward effective SCM and process maturity.
Each level contains characteristics associated
with process maturity such as predictability,
capability, control, effectiveness and efficiency.
The following is a brief description of each SCM
maturity level: . Ad hoc – The supply chain and its practices
are unstructured and ill-defined. Process
measures are not in place. Jobs and
organizational structures are not based on
horizontal supply chain processes. Process
performance is unpredictable. Targets, if
defined, are often missed. SCM costs are high.
Customer satisfaction is low. Functional
cooperation is also low. . Defined – Basic SCM processes are defined
and documented. Jobs and organization
basically remain traditional. Process
performance is more predictable. Targets are
defined but still missed more often than not.
Overcoming the functional silos takes
considerable effort owing to boundary
concerns and competing goals. SCM costs
remain high. Customer satisfaction has
improved, but is still low.
Figure 3 The BPO maturity model
Development of a supply chain management process maturity model
Archie Lockamy III and Kevin McCormack
Supply Chain Management: An International Journal
Volume 9 · Number 4 · 2004 · 272-278
275
. Linked – This represents the breakthrough
level. Managers employ SCM with strategic
intent and results. Broad SCM jobs and
structures are put in place outside and on top
of traditional functions. Cooperation between
intra-company functions, vendors and
customers takes the form of teams that share
common SCM measures and goals that reach
horizontally across the supply chain. Process
performance becomes more predictable and
targets are often achieved. Continuous
improvement efforts take shape focused on
root cause elimination and performance
improvements. SCM costs begin decreasing
and feelings of esprit de corps take the place of
frustration. Customers are included in process
improvement efforts and customer
satisfaction begins to show marked
improvement. . Integrated – The company, its vendors and
suppliers, take cooperation to the process
level. Organizational structures and jobs are
based on SCM procedures, and traditional
functions, as they relate to the supply chain,
begin to disappear altogether. SCM measures
and management systems are deeply
imbedded in the organization. Advanced
SCM practices, such as collaborative
forecasting and planning with customers and
suppliers, take shape. Process performance
becomes very predictable and targets are
reliably achieved. Process improvement goals
are set by the teams and achieved with
confidence. SCM costs are dramatically
reduced and customer satisfaction and esprit
de corps become a competitive advantage. . Extended – Competition is based on multi-
firm supply chains. Collaboration between
legal entities is routine to the point where
advanced SCM practices that allow transfer of
responsibility without legal ownership are in
place. Multi-firm SCM teams with common
processes, goals and broad authority take
shape. Trust, mutual dependency and esprit de
corps are the glue holding the extended supply
chain together. A horizontal, customer-
focused, collaborative culture is firmly in
place. Process performance and reliability of
the extended system are measured and joint
investments in improving the system are
shared, as are the returns.
SCM process maturity and performance
On constructing the SCM maturity model, a
survey instrument was created to investigate the
relationship between SCM process maturity and
overall supply chain performance. Participants for
the study were selected from the membership list
of the Supply Chain Council. This list consisted of
523 key informants representing 90 firms.
Participants were asked to rate their performance
by each area of the SCOR model (i.e. “plan”,
“source”, “make”, “deliver”) on a scale of 1 (poor)
to 5 (excellent). The individual ratings were then
summed to develop an overall performance score.
The results are illustrated in Table I. In addition,
Figure 4 The supply chain management maturity model
Development of a supply chain management process maturity model
Archie Lockamy III and Kevin McCormack
Supply Chain Management: An International Journal
Volume 9 · Number 4 · 2004 · 272-278
276
other overall performance questions were asked of
the participants. The results for these questions are
also presented in Table I. The distribution of the
answer to the performance questions was
acceptable, with no one grouping being over- or
under-represented. The only exception was that
the answers to the overall business performance
question were slightly skewed, since no one rated
their performance as being poor.
Next, a SCM process maturity measurement
instrument was developed to collect data from the
respondents used to analyze the relationship
between SCM process maturity and the supply
chain performance results exhibited in Table I.
Regression analysis was used to identify
statistically significant relationships between
variables. Beta and R 2
coefficients were used as
indicators of the strength and explanatory power of
the relationships. In this analysis, R 2
indicates the
fit of the linear relationship between the SCM
maturity scores and the performance variable
scores. R 2
also indicates the proportion of the
variation in the dependent variable (performance)
explained by SCM maturity (the independent
variable). For example, as illustrated in Table II,
11 percent (0.111) of the variation in days of sales
(DOS) inventory performance is explained by the
SCM maturity scores. The statistical significance
of each relationship is also shown in Table II. The
minimum result used to decide if a relationship
was significant was 0.1, or 90 percent. The
relationships that met this hurdle are marked with
an asterisk.
As illustrated in Table II, four relationships were
found to be significant. “Basicpp”, the sum of the
individual SCOR area ratings, had the strongest
correlation to SCM process maturity with a b of
0.825 and an R 2
of 0.68. RP3 (days of sales [DOS]
versus competitors), RP5 (delivery performance
versus commit date) and RP6 (order lead times
versus competitors) were also significantly
correlated with SCM process maturity. However,
it is clear that performance measured by SCOR
area (i.e. “plan”, “source”, “make” and “deliver”)
is the measurement of performance most related to
SCM process maturity. An explanation for this
result is that this measurement approach provides
a clear process context as provided by the four
areas of the SCOR model.
The other significant relationships are all
process measures that clearly reflect process
performance. There are very few factors outside of
most SCM organizations that can impact the days
of sales and order lead times process metrics. This
may explain their relatively strong relationship
with performance (b of 0.333 and 0.37,
respectively) and relatively large R 2
(0.111 and
Table I Supply chain performance results (percentage of respondents)
Rating
1 (Poor) 2 (Fair) 3 (Good) 4 (Very good) 5 (Excellent)
Please rate the overall performance of
your business unit last year 0.0 11.8 39.2 41.2 7.8
Please rate the overall performance of
your business unit last year relative
to major competitors 4.1 10.2 26.5 46.9 12.2
Compared with your major competitors your
overall days of supply (DOS) are: 10.0 32.0 24.0 22.0 12.0
Compared with your major competitors your
overall cash-to-cash cycle times are: 8.9 20.0 42.2 20.0 8.9
Compared with your major competitors your
delivery performance versus commit date is: 4.0 6.0 24.0 50.0 16.0
Compared with your major competitors your
quoted order lead times are: 2.0 14.3 40.8 26.5 16.3
Table II Regression analysis results: SCM maturity versus performance variable
Performance variable Description b R2 Significance
Basicpp Sum of individual SCOR ratings 0.825 0.680 0.000*
RP1 Overall business performance 0.182 0.033 0.202
RP2 Business performance versus competitors 0.157 0.025 0.282
RP3 DOS versus competitors 0.333 0.111 0.018*
RP4 Cash-to-cash cycle time versus competitors 0.044 0.002 0.775
RP5 Delivery versus commit date 0.237 0.056 0.097*
RP6 Order lead times versus competitors 0.370 0.137 0.009*
Note: *Significant at 0.1 or greater
Development of a supply chain management process maturity model
Archie Lockamy III and Kevin McCormack
Supply Chain Management: An International Journal
Volume 9 · Number 4 · 2004 · 272-278
277
0.137, respectively). In contrast, delivery
performance versus commit date has a weak
relationship. An explanation for this result is that
many firms do not measure this, and there are
other functions outside of the SCM organization
that may impact this measure (e.g. sales and
marketing).
It is interesting to note that overall business
performance and business performance versus
competitors were not significant. Perhaps this is
too broad a measure for this analysis, since there
are many factors that affect this variable, in
addition to SCM. Cash-to-cash cycle times versus
competitors was also not significant. An
explanation for this result could be that this is
outside of the responsibility of most SCM
organizations. In many organizations, this activity
is often under the control of the accounting
department, which, in most firms, still remains
outside the SCM process. Thus, performance in
this area is not influenced by SCM process
maturity.
Conclusions
This research illustrates the use of the SCM
maturity model as a valuable analysis framework
with a good theoretical basis. This research also
suggests that SCM process performance collected
by SCOR area is strongly related to SCM maturity.
Additionally, the research indicates that direct
process performance measures such as cycle times
and inventory levels are also related to SCM
maturity. These relationships suggest that the
SCM maturity measurement instrument can be
used for prescriptive purposes in SCM
improvement efforts by indicating which maturity
measurements are deficient, therefore focusing on
continual improvement efforts.
Although the relationship between SCM
maturity and overall business performance is not
shown as significant in this research, a case can be
made that process performance must impact
overall business performance. Perhaps the method
of measurement for overall business performance
in this research is not specific enough and needs to
be refined. Future research is needed in this area to
investigate the relationship of SCM process
maturity and specific supply chain-related
financial measures such as SCM costs (order
management, transportation, etc.). This may
provide the specificity needed to uncover the
relationships that are suggested by the relationship
of SCM process maturity to process performance
measures such as cycle time and inventory.
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Further reading
Davenport, T.H. (1993), Process Innovation: Reengineering Work through Information Technology, Harvard Business School Press, Boston, MA.
Development of a supply chain management process maturity model
Archie Lockamy III and Kevin McCormack
Supply Chain Management: An International Journal
Volume 9 · Number 4 · 2004 · 272-278
278