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  <front>
    <journal-meta />
    <article-meta>
      <title-group>
        <article-title>Structures of CRM Systems⋆</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <string-name>Oleksandr Tymchenko</string-name>
          <email>alextymchenko53@gmail.com</email>
          <xref ref-type="aff" rid="aff0">0</xref>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Bohdana Havrysh</string-name>
          <email>dana.havrysh@gmail.com</email>
          <xref ref-type="aff" rid="aff0">0</xref>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Chorniak</string-name>
          <email>v.chorniak41@gmail.com</email>
          <xref ref-type="aff" rid="aff0">0</xref>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <aff id="aff0">
          <label>0</label>
          ,
          <addr-line>Miroslav Kvassay</addr-line>
        </aff>
        <aff id="aff1">
          <label>1</label>
          <institution>Lviv Polytechnic National University</institution>
          ,
          <addr-line>Stepana Bandery Street, 12, Lviv, 79000, Ukraine 2</addr-line>
        </aff>
        <aff id="aff2">
          <label>2</label>
          <institution>and Volodymyr</institution>
        </aff>
      </contrib-group>
      <abstract>
        <p>development of information technologies and intense market competition. Modern enterprises striving for success require effective mechanisms for managing customer relationships, which in turn fuels growing interest in optimal CRM architectures. This study explores both basic and fractal approaches to organising CRM components, highlighting the use of mathematical tools e systems. Employing visual instruments such as diagrams and tables clarifies key parameters and development trends of CRM solutions, while the principles of fractal analysis open avenues for expanding CRM architecture toward greater flexibility and adaptability. The paper concludes by outlining prospects management efficiency and optimising business processes.</p>
      </abstract>
    </article-meta>
  </front>
  <body>
    <sec id="sec-1">
      <title>1. Introduction</title>
      <p>The contemporary business landscape demands tools that simultaneously offer flexible data
these criteria are gaining traction in large corporations as well as in
enterprises. Traditional approaches to designing and operating CRM platforms, however, often
overlook the intricate hierarchies that link customer data, partner information and internal
workflows. As a result, adapting CRM architecture to rapidly shifting market conditions becomes
problematic.
flows. This challenge is compounded by the need to formalise and visualise performance indicators
while scaling the solution in both quantitative and qualitative terms.</p>
      <p>Consequently, investigating CRM structures through fractal analysis is both timely and essential,
as such a synthesis reveals consistent patterns and optimal modelling methods for complex</p>
    </sec>
    <sec id="sec-2">
      <title>2. Analysis of recent studies and publications</title>
      <p>
        The challenges of designing and implementing CRM systems have been examined from multiple
ntegration within corporate
platforms [
        <xref ref-type="bibr" rid="ref1 ref2 ref4">1, 2, 4</xref>
        ]. Research attention frequently centres on methods for enhancing customer
interaction efficiency, optimising marketing activities and ensuring reliable storage of large data
volumes [
        <xref ref-type="bibr" rid="ref12 ref6">6, 11</xref>
        ]. At the same time, academic work increasingly emphasises architectural flexibility
ing systems
capable of reproducing their own structure at various levels [
        <xref ref-type="bibr" rid="ref3 ref5">3, 5</xref>
        ]. Several recent publications
highlight mathematical models that help unify heterogeneous processes within CRM platforms, as
well as the necessity of employing diagrams and tables to conveniently present large datasets on
customer interactions [
        <xref ref-type="bibr" rid="ref7 ref8">7, 8</xref>
        ].
      </p>
    </sec>
    <sec id="sec-3">
      <title>3. Purpose of the article</title>
      <p>The aim of this study is to identify the principal structural patterns of CRM systems and to
architecture. To achieve this goal, the work investigates the defining features of contemporary CRM
platforms, analyses their relationship to fractal models and elucidates the mathematical expressions</p>
      <p>Special attention is devoted to both theoretical and applied aspects of forming fractal systems that
can enhance customer interaction efficiency and streamline internal business processes. A further
objective is to demonstrate the value of visual instruments, specifically diagrams and tables in
architectures.</p>
    </sec>
    <sec id="sec-4">
      <title>4. Modelling methodology</title>
      <p>
        The modelling methodology for a fractal CRM system combines structural analysis with iterative
involves formalising the input data, which entails gathering information on customer profiles,
communication channels and business processes that shape interactions between organisational
units and the customer base [
        <xref ref-type="bibr" rid="ref10 ref9">9, 10</xref>
        ]. At this point, key parameters required for deploying fractal logic
are identified, includi
branching strategy.
configuration. This model delineates the core CRM blocks, such as the analytics module, the
ntre hub.
      </p>
      <p>
        Employing a fractal approach means that each of these blocks can undergo iterative subdivision,
l or functional [
        <xref ref-type="bibr" rid="ref13">12</xref>
        ]. To determine the depth of fractal
nesting and the optimal ratio between subsystem count and data workload, the mathematical
apparatus of fractal dimension is applied. Typically, the model analyses the relationship between the
number of iterative blocks a
throughput and capacity or instead overloads communication channels [
        <xref ref-type="bibr" rid="ref14 ref15">13, 14</xref>
        ].
      </p>
      <p>
        The final stage entails repeatedly simulating scenarios at varying scales and recording key
performance metrics. Here, correlation analysis particularly the Grassberger-Procaccia method is
employed to reveal the density and intensity of links within the fractally organised system. If the
recalibrating the scale factor or limiting the depth of fractal iterations. This iterative methodology
delivers a balanced architectural design for the fractal CRM system and provides a reliable
4.1. Presentation of the core findings
The development of CRM systems is closely tied to the need for rapid responses to customer requests
and to the dynamic changes of the market environment [
        <xref ref-type="bibr" rid="ref11 ref17">16, 17</xref>
        ]. Classical systems usually distinguish
data. Despite the practical advantages of such an approach, it often proves overly rigid, because it
does not always take into account the complex links among different data entities. By contrast, the
fractal paradigm assumes that every system block contains a certain structural similarity to the
various hierarchical levels [
        <xref ref-type="bibr" rid="ref18">18, 19</xref>
        ].
      </p>
      <p>
        Within CRM systems a fractal structure can be expressed through iterative procedures that build
while reflecting specific local parameters. To justify this idea, one should turn to the mathematical
apparatus of fractals. One of the key indicators of fractal structures is their fractal dimension. In
general terms it can be described by a formula that relates the number of elements to the scale of the
object under study. For example, if N r is the scale factor (that is, the
D is defined as
a ratio of logarithms:
 =
,
In the context of CRM
systems, this implies that by decomposing the overall
(1)
one
substantial information volumes concurrently, begin to exhibit the intricate behaviour typical of
[
        <xref ref-type="bibr" rid="ref19">20</xref>
        ]. Within such systems information flows not only vertically (from
departments interactions that a traditional hierarchical methodology struggles to formalise in
advance. Fractal geometry, however, enables the modelling of emergent links and the evaluation of
their prospective effectiveness.
      </p>
      <p>To illustrate the potential of fractal interpretation in CRM platforms, it is instructive to visualise
a comparative analysis of system components across multiple scales. In this vein one may present
aggregated data on how the number of service nodes N that handle a particular customer category
changes with the scale factor r, spanning gradations from a local sales office to regional and global
tiers.
index F, calculated from the performance coefficients of each level:
 =
( 1 ·  2 · … ·   )


(3)</p>
      <p>Here P1, P2, . . . ,Pk denote the performance values of the individual subsystems, while P is the
total system performance. The closer F is to one, the more the CRM platform exhibits fractal
coherence across its hierarchy.</p>
      <p>
        The essence of this formula is that the numerator computes the geometric mean of the
performance values for every subsystem [
        <xref ref-type="bibr" rid="ref19 ref20">20, 21</xref>
        ]. This metric weighs each subsystem equally, unlike
the arithmetic mean, which can be distorted when one or two units report abnormally high or low
values.
      </p>
      <p>
        Division by P
performance. When F approaches one, the subsystems are well balanced, and the CRM architecture
preserved at every tier. If F diverges significantly from one, it suggests that some modules differ
markedly from the rest, breaking fractal harmony and potentially harming scalability and
consider hybrid configurations that combine corporate, regional and local subsystems [
        <xref ref-type="bibr" rid="ref22 ref23">23, 24</xref>
        ]. A
tabular layout can present the performance values of these units along with their respective
particularly important for CRM platforms that need to integrate data from numerous communication
      </p>
      <p>To verify the advantages of fractal organisation, one can apply the notion of correlation
dimension, which measures the density of connections within the system. Let C(r) be the correlation
function representing the number of element pairs that interact within a distance r. The correlation
dimension Dc is then defined as
where
  = lim (
 →0</p>
      <p>2
 ( − 1)</p>
      <p>∑
1≤ &lt; ≤
 ( − ||  −   ||)
(4)</p>
      <p>When a system possesses a pronounced fractal nature, the resulting value of Dc differs from the
blocks integrate with each other and with external components. As the number of elements and
communication channels grows, Dc can increase, indicating heightened complexity and a more</p>
      <p>The practical adoption of fractal CRM architectures has become feasible thanks to advances in
computational infrastructure and the broader shift toward flexible cloud solutions. Within a cloud
environment it is straightforward to scale according to the fractal principle, since additional
providing stability and ease of maintenance. In many cases a hybrid fractal model is advisable, with
certain modules remaining on a local server for security or performance reasons and others operating
in the cloud while data coherence is maintained at the architectural level. All of these aspects should
be visualised, for example through diagrams that relate performance to system complexity, thereby
demonstrating convincingly that fractal design can balance reliability, speed and adaptability.
fractal analysis represents a promising direction for further research. For instance,
teristics of consumer
behaviour data, enabling more accurate forecasts of potential market scenarios and more effective
management of marketing campaigns.</p>
    </sec>
    <sec id="sec-5">
      <title>5. Illustrative use case: fractal CRM in a multi-branch retail company</title>
      <p>To demonstrate how the proposed fractal methodology can be applied in practice, we consider the
case of a retail enterprise operating across multiple geographic levels: local stores, regional hubs, and
a national headquarters. Each organisational tier interacts with its own customer base, processes
transactions, and contributes to central analytics, while maintaining relative autonomy. Using the
fractal approach, core CRM logic such as customer segmentation, marketing response tracking, and
service workflow execution is replicated in lightweight modular instances deployed across all
operational levels. These modules preserve essential architectural logic while adjusting to local
parameters, including customer density, regional preferences, and staffing.</p>
      <p>The company implemented this architecture using six layers of structural depth, each measured
for performance and fractal conformity. Quantitative assessment was carried out using the
previously defined formulas, including the fractal dimension D, the self-organisation efficiency index
E, and the conformity index F. Subsystems with the highest F-index values exhibited superior balance
between data throughput and processing latency, while those with weaker coherence showed signs
of bottleneck accumulation. As communication channels diversified email, in-store interactions, app
feedback the correlation dimension   increased, reflecting a rise in self-organising complexity and
validating the predictive value of fractal metrics.</p>
      <p>These results suggest that fractal modelling not only supports technical scalability but also aligns
with the operational logic of distributed retail environments. By embedding adaptability and
coherence into each architectural level, the system becomes more resilient to surges in customer
activity and better equipped for strategic realignment. The use case affirms that the fractal paradigm
is not merely a theoretical construct, but a functional design model applicable to diverse CRM
ecosystems.</p>
    </sec>
    <sec id="sec-6">
      <title>6. Conclusions and future work</title>
      <p>This study has demonstrated that fractal analysis offers a viable framework for designing CRM
system architectures that are both scalable and self-organising. By introducing mathematical
constructs such as fractal dimension, conformity index, and correlation dimension, the work
provides formal instruments for quantifying system efficiency and coherence across architectural
levels. These tools not only support theoretical understanding but also offer actionable insights for
developers aiming to balance load distribution and preserve functional symmetry.</p>
      <p>The modelling methodology described herein emphasises iterative decomposition and recursive
self-similarity, resulting in CRM structures that mirror macro-level logic within micro-level modules.
This approach enhances modular flexibility and facilitates horizontal as well as vertical data
integration capabilities that are critical for CRM platforms handling complex, multi-channel
customer interactions.</p>
      <p>Our findings indicate that geometric progression in subsystem replication correlates with
improved performance metrics, provided that fractal balance is maintained. The use of the F-index
to assess subsystem alignment has proven particularly effective, as it mitigates skew from outlier
values and reveals latent inefficiencies in system design. The application of correlation dimension
further enriches this analysis by measuring connection density and self-organising potential in
dynamic environments.</p>
      <p>Given the increasing shift toward cloud-native and hybrid IT ecosystems, the proposed model is
readily adaptable to real-world infrastructures. Fractal scalability permits the rapid deployment of
modular CRM instances across distributed networks, ensuring both resilience and continuity of
service. In hybrid scenarios, where part of the system remains on-premises, maintaining fractal
coherence becomes a strategic advantage for preserving data consistency and operational fluidity.</p>
      <p>For future work, we propose the development of analytical toolkits that integrate fractal metrics
with machine-learning methods. Enhancing customer segmentation algorithms with fractal feature
sets may yield more accurate predictive models, thereby improving campaign targeting and lifecycle
management. Additionally, simulation environments could be employed to refine dynamic fractal
parameters under variable load conditions and network topologies.</p>
      <p>In conclusion, this paper sets forth a theoretical and methodological foundation for a new
generation of CRM systems those capable of adapting, scaling, and self-optimising within the fractal
complexity of modern digital ecosystems. The fusion of mathematical formality with architectural
pragmatism offers a promising direction for both academic inquiry and practical deployment.</p>
    </sec>
    <sec id="sec-7">
      <title>7. Limitations and numerical validation of the fractal CRM model</title>
      <p>Although fractal analysis has proved effective for modelling CRM architectures, its applicability is
bounded by several contextual constraints. The first limitation concerns heterogeneity: subsidiaries
operating under divergent legal requirements or customer profiles may fail to inherit a self-similar
structure without functional loss. The second limitation lies in data quality; metrics such as the
fractal dimension D or the conformity index F rely on synchronised and noise-free logs. Inconsistent
sampling frequencies or missing values distort geometric aggregates and disguise latent bottlenecks.
A third constraint is resource overhead: excessive recursion depth multiplies communication links
and can erode the very efficiency that fractal design seeks to secure. Where ultra-low-latency
processes dominate, a hybrid arrangement centralising critical paths while fractally scaling
ancillary services, often proves more reliable than a uniformly recursive layout.</p>
      <p>To ground these observations in quantitative evidence, consider a CRM deployment that consists
of four autonomous functional subsystems: Sales Management, Customer Support, Analytics and
Marketing Automation. Their peak-hour productivity figures, expressed in normalised throughput
units, together with the aggregate system rate, are summarised below.
Diagnostic Productivity Metrics and Fractal Conformity Validation
Applying the definition of fractal consistency, the geometric mean of the individual values is
The resulting conformity index is
 = (280 ⋅ 260 ⋅ 300 ⋅ 260)4 ≈ 274.49</p>
      <p>1


recursive distribution of workload preserves fractal harmony. Should future monitoring reveal F
drifting markedly below 0.9, architectural rebalancing either by reallocating compute resources or
by reducing recursion depth would be advisable to forestall throughput degradation and maintain
self-similar responsiveness across hierarchical layers.</p>
    </sec>
    <sec id="sec-8">
      <title>Acknowledgements</title>
      <p>The authors are appreciative of colleagues for their support and appropriate suggestions, which
allowed to improve the materials of the article.</p>
    </sec>
    <sec id="sec-9">
      <title>Declaration on Generative AI</title>
      <p>The author(s) have not employed any Generative AI tools.</p>
    </sec>
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