Data ingestion is the process of moving or onboarding data from one or more data sources into an application data store. Every business in every industry undertakes some kind of data ingestion - whether a small scale instance of pulling data from one application into another, all the way to an enterprise-wide application that can take data in a continuous stream, from multiple systems; read it; transform it and write it into a target system so it’s ready for some other use.
A data migration is a wholesale move from one system to another with all the timing and coordination challenges that brings. Migration is often a ‘one-off’ affair, although it can take significant resources and time.
Data ingestion on the other hand usually involves repeatedly pulling in data from sources typically not associated with the target application, often dealing with multiple incompatible formats and transformations happening along the way.
Data ingestion methods vary based on your specific requirements, data sources, and business needs. Understanding the different approaches helps you choose the right strategy for your use case.
Batch ingestion involves collecting and processing data in scheduled groups or "batches" at regular intervals. Batch ingestion is typically done at a much lower cadence but with much higher efficiency.
Common examples: Nightly sales reports, monthly financial consolidations, weekly customer behavior analysis, or quarterly regulatory reporting.
Real-time or streaming ingestion processes data continuously as it's generated, with minimal latency between data creation and availability.
Common examples: Credit card transaction monitoring, stock trading platforms, real-time website personalization, or continuous equipment monitoring in manufacturing.
Micro-batch ingestion strikes a balance between batch and streaming approaches by processing small batches of data at very short intervals (seconds to minutes). This hybrid method provides near-real-time insights while maintaining the efficiency and manageability of batch processing.
Common examples: Social media sentiment monitoring, clickstream analysis for web analytics, inventory updates in e-commerce systems, or log aggregation for system monitoring.
Change Data Capture monitors and captures only the changes made to source data - inserts, updates, and deletes - rather than reprocessing entire datasets.
Common examples: Synchronizing customer records between CRM and data warehouse, maintaining backup databases, updating product catalogs across multiple systems, or feeding data lakes with operational changes.
Lambda architecture combines both batch and streaming processing layers to handle data ingestion at scale while maintaining accuracy. The batch layer processes complete datasets for accuracy, while the speed layer handles real-time data for immediate insights.
Common examples: Large-scale recommendation engines, complex financial risk analysis systems, comprehensive customer 360 platforms, or enterprise-wide analytics platforms.
Beyond timing considerations, data ingestion can also be categorized by how data moves from source to target:
Push-based ingestion: Source systems actively send data to the target as it becomes available. The source controls when and how data is transferred, often using webhooks, APIs, or message queues.
Pull-based ingestion: The target system periodically queries or polls source systems to retrieve new data. The target controls the ingestion schedule and determines when to fetch updates.
Choosing between push and pull:
The optimal ingestion approach depends on several factors:
Many organizations use multiple ingestion methods simultaneously—batch processing for historical reports, CDC for database synchronization, and streaming for real-time monitoring. The key is matching each data flow to the method that best serves its specific requirements while keeping infrastructure complexity manageable.
These terms are often used interchangeably, but they have distinct meanings that are helpful to understand when designing your data architecture. In practice, these processes often overlap.
Data ingestion is the process of moving data from one or more sources into a target system, adapting it to the required format and quality along the way. It's typically a repeated process - think onboarding new customers to your SaaS platform, or regularly pulling data from external sources into your system.
ETL (Extract, Transform, Load) is traditionally focused on moving data into data warehouses or data lakes for analytics and business intelligence. The emphasis is on transforming data into well-defined, rigid structures optimized for reporting.
Data integration involves combining data from multiple different sources to create a unified view. Rather than simply moving data from one place to another, you're merging datasets together—for example, combining customer data from your CRM with order data from your e-commerce platform to create comprehensive customer profiles.
| Data Ingestion | Data Integration | ETL | |
| Primary purpose | Move data from source to target | Combine data from multiple sources | Prepare data for analytics |
| Typical use case | Customer data onboarding, operational data feeds | Creating unified views, cross-system reporting | Business intelligence, data warehousing |
| Flexibility | Must handle varied, unpredictable formats | Needs to reconcile different structures | Works with known, planned sources |
| Output | Data in operational systems or storage | Unified, combined dataset | Standardized warehouse schema |
| Cadence | Repeated/ongoing | Ongoing synchronization | Scheduled batch processes or real-time |
Read more
The process of data ingestion consists of several steps.
To streamline processes, save time on manual work and reduce errors, as much of your data ingestion process as possible should be automated.
Data quality issues are one of the biggest challenges in data ingestion. Bad data can cause pipeline failures, corrupt downstream systems, and erode trust in your platform. The key is building validation into multiple stages of your pipeline - catching problems early and handling errors systematically.
Input validation checks data as it enters your pipeline. This might include verifying file formats are correct, checking that required fields are present, and ensuring data types match expectations. The more robust your input validation, the fewer surprises you'll encounter downstream.
Output validation is your final check before data reaches its destination. This catches any transformation errors, ensures data meets target system requirements, and validates that business rules have been applied correctly.
Beyond validation of individual records, data profiling examines entire batches to assess overall quality. For example, you might check that the total number of records matches expectations, that key fields aren't mostly null, or that value distributions look reasonable. Profiling helps you spot systemic issues - like a client changing their file format - before they cause bigger problems.
When data fails validation, what happens next? In a well-designed ingestion pipeline, rejected records are captured with detailed error information and routed to a process for correction.
Importantly, error handling should be accessible to the people who can actually fix the data - often business users or customer success teams, not just IT staff. They're the ones who understand the context and have the authority to correct issues.
An effective data quality approach includes:
As well as fixing immediate problems, this systemic approach can provide valuable insights about your processes, training needs or upstream systems.
Read more: Building data pipelines to handle bad data
Data ingestion can take a wide variety of forms. These are just a few real-world examples:
SaaS platforms face a standard data ingestion challenge: they need to onboard data from many different sources (clients), which often arrives in different formats via different methods. The SaaS business needs to onboard data quickly so that new customers can get up and running fast, and so the data that customers are seeing is up-to-date.
The challenge of accepting data 'as-is' from multiple clients is a common one - clients often won't (or can't) format data to exactly the right specification, so incoming data needs to be standardized to the SaaS company's requirements. This often involves lots of manual, error-prone work that takes up developer time. And it becomes impossible to scale as client volumes increase.
Enabling non-technical teams to manage data onboarding
Often, the domain experts who understand the data best can't work on it because the ingestion pipeline lives in a technical system that only developers can use. Sending Excel files back and forth for manual corrections is insecure and error-prone. The best way to be able to offload onboarding work from technical to business users is to have a data platform that offers separate interfaces for each audience, enabling collaboration and more efficient onboarding.
Case study: Freeing up engineering time by a third for Zywave
Setting up a data ingestion pipeline is rarely as simple as you’d think. Often, you’re consuming data managed and understood by third parties and trying to bend it to your own needs. This can be especially challenging if the source data is inadequately documented and managed. Typical challenges include:
One of the biggest challenges growing companies face is the need to scale up data ingestion without just increasing headcount to handle more manual work. The answer is building an automated data ingestion framework to handle data coming from multiple sources, in different formats, automatically.
Benefits of a data ingestion framework
When you’re dealing with a constant flow of data, you don’t want to have to manually supervise it, or initiate a process every time you need your target system updated. You really want to plan for this from the very beginning otherwise you'll end up wasting lots of time on repetitive tasks.
Human error can lead to data integrations failing, so eliminating as much human interaction as possible can help keep your data ingest trouble-free. (This is even more important if the ingestion occurs frequently).
Both these points can be addressed by automating your ingest process.
You’ll also need to consider other potential complexities, such as:
Data ingest can also be used as a part of a larger data pipeline. Other events or actions can be triggered by data arriving in a certain location. For example - a system that monitors a particular directory or folder, and when new data appears there, a process is triggered.
There are typically 4 primary considerations when setting up new data pipelines:
It’s also very important to consider the future of the ingestion pipeline. For example, growing data volumes or increasing demands of the end users, who typically want data faster.
Another important aspect of the planning phase of your data ingest is to decide how to expose the data to users. Typical questions asked in this phase of pipeline design can include:
These considerations are often not planned properly and result in delays, cost overruns and increased end user frustration.
Read more: Data ingestion tools: 7 features you should look for
Your data ingestion process should be efficient and intuitive, and CloverDX’s automation capabilities can play a crucial role in this, giving you:
Our demos are the best way to see how CloverDX works up close. Get in touch for a personalized demo and see how you could streamline your data ingestion process with CloverDX.