24.7.2025

How DWH brings data from all systems together in one place and helps businesses analyze information, build reports, and make decisions faster and more accurately

How DWH data warehousing automates the collection and cleaning of information from CRM, 1C, and Excel, speeds up analytics, and helps businesses make fact-based decisions.

What is a data warehouse or DWH
How it differs from a transactional database (DB)
What a Data Warehouse consists of
Why data warehouses matter

Introduction: why data storage is needed

Published: 24.7.2025. Reading time: 6 min. Imagine all data from CRM, 1C, Excel, and other systems being automatically collected in one place, cleaned, and turned into clear reports and dashboards. In this article, we explain how a data warehouse (DWH) helps businesses make decisions faster, lower costs, and increase profit.

Imagine: all data from CRM, 1C, Excel, and other systems is automatically collected in one place, cleaned of errors, and turned into ready-made reports and clear dashboards. No more routine work or wasted time because of outdated information.

What is a data warehouse or DWH

A data warehouse is a server where all company information is stored and analytically processed.
These repositories are also called Data Warehouse or DWH, or corporate data warehouse, abbreviated as CDW.
Initially, data enters different systems: CRM, spreadsheets, CMS.
That is where information is sent to the storage server. DWH collects and cleans this flow.
The database warehouse system becomes a single source of information from which it can later be pulled in any combination and in a convenient form: charts, diagrams, and tables.
Business intelligence systems, or BI, help visualize information.
They look for patterns and relationships in data, for example for a specific customer, and work with AI, machine learning, and result visualization tools.
But a natural question arises: if DWH preserves both current and historical information, why use a data warehouse additionally for the same analytical purposes?

How DWH differs from a transactional database (DB)

DWH and transactional databases are different.
The first is needed to analyze information that arrives regularly, for example every day or every hour.
Warehouses process large data sets collected over several years.
In practice, this means you can enter data on sales, production, deals, personnel, and deliveries for several years, and all of it will be stored and comprehensively analyzed by the system, while you get relevant results when you run the right query.
Transactional databases are needed for day-to-day operations.
This type of database underlies CRM, ERP, and other similar modules.
In other words, data enters such a database every day, but only the meaningful elements reach the DWH.
This helps control the volume of information and build a complete management, accounting, and tax picture for the business.

What a Data Warehouse consists of

Data warehouses usually have several classic layers: Sources

This is where raw data goes: from the website, CRM, billing system, and other databases. Warehouse. Data arrives in a chaotic flow.

The task of a DWH is to consolidate them and standardize them.

For example, at this stage, data about the same customer from different systems is grouped into one folder.

Later, the business owner can get a comprehensive customer report from the warehouse, regardless of where the information originally came from. Data mart. This is the stage where standalone blocks of information become a structure.

Why data warehouses are needed: simpler integration

The overarching goal of a data warehouse is to simplify work and broaden visibility into the real business situation.
These are the goals behind setting up DWH:
If you work with Bitrix24, 1C, and keep a couple of Excel spreadsheets, gathering data even for one customer or company becomes difficult.
The larger the business, the more software employees use every day. DWH quickly consolidates the information and delivers it on demand.

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Cleaning unnecessary data (ETL/ELT)

ETL/ELT, the data processing approach in DWH, cleans data of errors and duplicates.
It saves time and effort: you do not need to fix the same thing multiple times.
The warehouse automatically filters out unnecessary data, loading only important information from trusted sources.
Users get a clear structure, up-to-date data, and analysis-ready information. When the data is consistent, the business gets clear conclusions.

Simplifying the work of other systems

The warehouse does not interfere with third-party operating systems and lets employees process more without slowdowns. This is especially relevant for large enterprises, particularly in banking and insurance, where the information is often sensitive. A DWH delivers isolated analytics without disrupting operations.

Data access for everyone

. In the past, analytics was available only to management. Now any employee can pull the needed elements from the system and build reports independently, without queues or intermediaries. This works thanks to the DWH + BI integration. As a result, IT receives fewer requests, which reduces turnaround time at every level.

Fast data-driven decisions

Before DWH, separate information blocks were often scattered across different systems, analysts spent days creating Excel reports, and decisions were made too late. With DWH and BI working together, the history of sales, production, and delivery is available in a single click. The data is already cleaned and ready for analysis, and clear dashboards replace manual reports. Managers see problems immediately and respond quickly.

Getting reliable data

. Managing data warehouses manually often leads to errors, and that in turn undermines trust in reports. A DWH automatically keeps data up to date and also ensures complete, consistent information. Human error is minimized. Stakeholders trust the analytics, and internal managers make decisions based on numbers, not intuition.

Benefits of a data warehouse: higher profit and lower costs

In an unstable economy, organizations evaluate technology investments especially carefully.

Implementing a data warehouse costs money, so this step must be justified.

Sound analysis considers both implementation and operating costs, as well as the potential business benefit.

Experience shows that, with the right approach, the benefits of DWH pay back the investment many times over.

Profit growth

. Initial investment depends on the business goals. But the key thing to remember is that real costs are always higher than the starting budget. New needs often arise along the way: marketing, sales, or additional production. In addition, annual maintenance consumes 40-60% of the original budget. Yet data warehouses indirectly support profit growth in the future. Analytics helps prevent rash decisions and avoids mistakes caused by a lack of data.

It also helps marketers attract new target audiences and develop catalog items or service lists.

Cost reduction

Detailed, in-depth data helps reduce costs in any business. For example, ad analysis shows which promotional channels perform best, helping avoid wasted spending. Up-to-date customer data also reduces penalties for delivery errors. The simpler and clearer the data, the lower the company’s costs.

Benefits of a data warehouse: analyst efficiency and lower IT costs

Analysts deliver more results.
The main advantage is that analysts now process information faster and get more done.
Combining DWH and BI speeds up getting answers.
One powerful database warehouse can replace a pile of old databases and systems.
Here is why it is beneficial: there is no need to maintain fragmented legacy solutions; IT specialists spend time only on their direct work duties; overall IT costs go down.

So what is the result?

A data warehouse is a powerful business tool that unifies scattered information into a single system.
It automatically cleans data, speeds up analytics, and reduces the cost of maintaining outdated solutions.
With DWH, companies make decisions faster, save employee time, and reduce costs.
Implementing a data warehouse is not just an IT infrastructure upgrade, but a strategic investment.
This helps the business adapt to massive information flows and simplifies work across the company.