Title: ETL Author: Kriko Published: Jun 15, 2023 Last modified: Jul 7, 2026 --- 1. [Home](https://kriko.io/) / 2. [Glossary](https://kriko.io/glossary) / 3. E Letter # ETL ETL is a data processing method used to collect, organise and transfer data in a structured and systematic manner. In this process, data is extracted from source systems, transformed into a suitable format and loaded into a target system. Data is often generated in different formats, structures and locations. To analyse and interpret this information effectively, it must be consolidated into a common environment and standardised format. Without this standardisation, analytical processes may become complex, time-consuming and costly. ETL provides significant advantages in terms of both cost and operational efficiency. It makes data more accessible, consistent, valuable and meaningful for analysis. ETL processes are commonly used in data migration, system integration, business intelligence and data warehousing projects. ETL stands for Extract, Transform and Load. The process consists of these three stages and is generally designed around a target storage environment, such as a data warehouse, data lake or centralised database. The stages of an ETL process can be summarised as follows: **Extract:** This is the process of retrieving data from source systems such as databases, file systems, applications and web services. Relevant data is selected and collected from tables, files or other sources. At this stage, the objective is to extract the data securely, accurately and in an appropriate format. **Transform:** This is the stage in which extracted data is converted into a format suitable for the target system. The data may be cleaned, standardised, validated, reorganised or combined with information from other sources. Transformation is essential because it enables data from different systems to be analysed and evaluated consistently. Common operations include data type conversion, value standardisation, filtering, aggregation, calculation and data merging. **Load:** This is the stage in which the transformed data is transferred to the target system. The data may be loaded into databases, data storage platforms, data warehouses or other analytical environments. During this stage, controls are applied to ensure that the data is transferred securely, accurately and completely. ## Discover it in the dictionary ### Business Continuity Plan A Business Continuity Plan, commonly abbreviated as BCP, is a preparedness and response plan that defines how an organisation will maintain critical operations during… ### Information Processing Cycle The information processing cycle refers to the stages through which raw data is transformed into meaningful information. During this process, data is entered into… ### Inbound Marketing Inbound marketing is a marketing approach that aims to attract potential customers to a brand through relevant content, experiences and digital touchpoints instead of… ### Black Hat SEO Black Hat SEO refers to aggressive, manipulative or deceptive SEO techniques that aim to gain rankings by violating search engine guidelines. These methods focus… ### Debrief A debrief is an evaluation and feedback meeting held after a brief to check whether the information has been understood correctly, clarify uncertain points… ### Real-time Marketing Real-time marketing is a marketing approach in which brands respond quickly and contextually to current events, trends, cultural moments, user behaviour or immediate opportunities.… ### Content Strategy Content strategy is a strategic process that covers the planning, creation, publication, management and continuous improvement of content across print or digital channels. It… ### Fishbone Diagram A Fishbone Diagram is a visual problem-solving tool used to systematically analyse the possible causes of a problem. It is also known as a… ### Attribution Models Attribution models are measurement approaches that determine how conversion credit is distributed across the marketing channels, ads or interactions a user touches before completing… ## Track the digital heartbeat with Kriko Subscribe to receive curated insights, news, and ideas shaping the digital landscape. By checking this box, you acknowledge and accept our [privacy policy](https://kriko.io/privacy-policy).