--- title: Legacy System Modernization | Dreamfactory description: A legacy system often requires much more than just a simple upgrade. What exactly is legacy modernization and is it critical for your business? image: https://blog.dreamfactory.com/hubfs/Imported_Blog_Media/6dDHofabCQ8-1024x576.jpg --- [![DreamFactory logo](https://cdn.prod.website-files.com/64ed8da8a866be7a702fbae0/68d51994d3678214b54acb60_dreamfactory-navbar-logo.svg)](https://www.dreamfactory.com/) Products & Services [AI Data Gateway](https://www.dreamfactory.com/ai-data-gateway/overview) [Overview Why DreamFactory exists](https://www.dreamfactory.com/ai-data-gateway/overview) [Data Gov, Comp, Security Policy enforcement at the API layer](https://www.dreamfactory.com/ai-data-gateway/ai-data-governance) [Standard API Layer One contract for every backend](https://www.dreamfactory.com/ai-data-gateway/standard-api-layer) [API Gateway Functionality Routing, auth, rate limits, observability](https://www.dreamfactory.com/ai-data-gateway/api-gateway-functionality) [Deployment & Integration Self-hosted, cloud, hybrid](https://www.dreamfactory.com/ai-data-gateway/on-premise-deployment-and-integration) [Developer Productivity Auto-generated, never hand-coded](https://www.dreamfactory.com/ai-data-gateway/ai-development-accelerated) [AI App Architectures Patterns for RAG, agents, MCP](https://www.dreamfactory.com/ai-data-gateway/enterprise-ai-architectures) AI Data Models [AIOpenAI](https://www.dreamfactory.com/use-cases/openai) [GGoogle Gemini](https://www.dreamfactory.com/use-cases/google-gemini) [CAnthropic Claude](https://www.dreamfactory.com/use-cases/anthropic-claude-landing) [LMeta Llama](https://www.dreamfactory.com/use-cases/meta-llama) [MMistral AI](https://www.dreamfactory.com/use-cases/mistral) [CoCohere](https://www.dreamfactory.com/use-cases/cohere) Services and support [Quickstart Service Packages Expert-led Quickstarts to production](https://www.dreamfactory.com/services-and-support/quickstart-services-packages) API Management [Generate & Manage REST APIs From any database, in seconds](https://www.dreamfactory.com/api-management/generate-rest-apis) [Features Security, scripting, self-hosted & more](https://www.dreamfactory.com/api-management/features) [API Generation The complete guide to auto-generated APIs](https://blog.dreamfactory.com/a-complete-guide-to-api-generation) [API Management Concepts, tools, and best practises](https://blog.dreamfactory.com/what-is-api-management-a-brief-overview-of-api-management-concepts-and-tools?_gl=1*jl0njh*_gcl_au*MjQzMjgwMTc3LjE3ODIzMjI3MzY) Use Cases AI Use Cases [AI Data Access Secure, governed reads for your LLMs](https://www.dreamfactory.com/use-cases/ai-data-access) [MCP Server Drop-in Model Context Protocol](https://www.dreamfactory.com/use-cases/mcp-server) [Legacy Modernization Wrap mainframes with REST](https://www.dreamfactory.com/use-cases/legacy-modernization) [Data Governance Audit every call, enforce every policy](https://www.dreamfactory.com/use-cases/data-governance) [Customer Case Studies](https://www.dreamfactory.com/case-studies) [Energy Modernization](https://www.dreamfactory.com/case-studies/energy-snowflake-modernization) [Government Modernization](https://www.dreamfactory.com/case-studies/government-mainframe-oracle-modernization) [Government Business Intelligence](https://www.dreamfactory.com/case-studies/government-sql-server-bi-analyst-queries) [Manufacturing Modernization](https://www.dreamfactory.com/case-studies/steel-manufacturing-sap-erp-modernization) [Financial Services Investor Portal](https://www.dreamfactory.com/case-studies/financial-services-sql-server-investor-portal) [Non-Profit Partner Data Sharing](https://www.dreamfactory.com/case-studies/non-profit-sql-server-partner-data-sharing) [Professional Services Exec Dashboards](https://www.dreamfactory.com/case-studies/professional-services-erp-dashboards) [Education HR and External Data Sharing](https://www.dreamfactory.com/case-studies/education-student-hr-sql-server-mysql-external-data-sharing) Industries Industries #### [Healthcare HIPAA-grade APIs across EHR, claims, and labs.](https://www.dreamfactory.com/use-cases/healthcare) #### [Financial Services Portfolios, partners, and portals on one layer.](https://www.dreamfactory.com/use-cases/financial-services) #### [Government Modernize mainframes without re-platforming.](https://www.dreamfactory.com/use-cases/government) #### [Manufacturing SAP, MES, and shop-floor data, governed.](https://www.dreamfactory.com/use-cases/manufacturing) #### [Spotlight How enterprises run on DreamFactory From healthcare to energy to finance — governance baked into every endpoint. 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layer](https://www.dreamfactory.com/ai-data-gateway/ai-data-governance) [Standard API Layer One contract for every backend](https://www.dreamfactory.com/ai-data-gateway/standard-api-layer) [API Gateway Functionality Routing, auth, rate limits, observability](https://www.dreamfactory.com/ai-data-gateway/api-gateway-functionality) [Deployment & Integration Self-hosted, cloud, hybrid](https://www.dreamfactory.com/ai-data-gateway/on-premise-deployment-and-integration) [Developer Productivity Auto-generated, never hand-coded](https://www.dreamfactory.com/ai-data-gateway/ai-development-accelerated) [AI App Architectures Patterns for RAG, agents, MCP](https://www.dreamfactory.com/ai-data-gateway/enterprise-ai-architectures) AI Data Models [AIOpenAI](https://www.dreamfactory.com/use-cases/openai) [GGoogle Gemini](https://www.dreamfactory.com/use-cases/google-gemini) [CAnthropic Claude](https://www.dreamfactory.com/use-cases/anthropic-claude-landing) [LMeta Llama](https://www.dreamfactory.com/use-cases/meta-llama) [MMistral AI](https://www.dreamfactory.com/use-cases/mistral) [CoCohere](https://www.dreamfactory.com/use-cases/cohere) Services and support [Quickstart Service Packages Expert-led Quickstarts to production](https://www.dreamfactory.com/services-and-support/quickstart-services-packages) AI Data Models [Generate & Manage REST APIs From any database, in seconds](https://www.dreamfactory.com/api-management/generate-rest-apis) [Features Security, scripting, self-hosted & more](https://www.dreamfactory.com/api-management/features) [API Generation The complete guide to auto-generated APIs](https://blog.dreamfactory.com/a-complete-guide-to-api-generation) [API Management Concepts, tools, and best practises](https://blog.dreamfactory.com/what-is-api-management-a-brief-overview-of-api-management-concepts-and-tools?_gl=1*jl0njh*_gcl_au*MjQzMjgwMTc3LjE3ODIzMjI3MzY) AI Use Cases [AI Data Access Secure, governed reads for your LLMs](https://www.dreamfactory.com/use-cases/ai-data-access) [MCP Server Drop-in Model Context Protocol](https://www.dreamfactory.com/use-cases/mcp-server) [Legacy Modernization Wrap mainframes with REST](https://www.dreamfactory.com/use-cases/legacy-modernization) [Data Governance Audit every call, enforce every policy](https://www.dreamfactory.com/use-cases/data-governance) [Customer Case Studies](https://www.dreamfactory.com/case-studies) [Energy Modernization](https://www.dreamfactory.com/case-studies/energy-snowflake-modernization) [Government Modernization](https://www.dreamfactory.com/case-studies/government-mainframe-oracle-modernization) [Government Business Intelligence](https://www.dreamfactory.com/case-studies/government-sql-server-bi-analyst-queries) [Manufacturing Modernization](https://www.dreamfactory.com/case-studies/steel-manufacturing-sap-erp-modernization) [Financial Services Investor Portal](https://www.dreamfactory.com/case-studies/financial-services-sql-server-investor-portal) [Non-Profit Partner Data Sharing](https://www.dreamfactory.com/case-studies/non-profit-sql-server-partner-data-sharing) [Professional Services Exec Dashboards](https://www.dreamfactory.com/case-studies/professional-services-erp-dashboards) [Education HR and External Data Sharing](https://www.dreamfactory.com/case-studies/education-student-hr-sql-server-mysql-external-data-sharing) Industries #### [Healthcare HIPAA-grade APIs across EHR, claims, and labs.](https://www.dreamfactory.com/use-cases/healthcare) #### [Financial Services Portfolios, partners, and portals on one layer.](https://www.dreamfactory.com/use-cases/financial-services) #### [Government Modernize mainframes without re-platforming.](https://www.dreamfactory.com/use-cases/government) #### [Manufacturing SAP, MES, and shop-floor data, governed.](https://www.dreamfactory.com/use-cases/manufacturing) SQL Database [SQL SQL Server](https://www.dreamfactory.com/connectors/sql-server) [OR Oracle](https://www.dreamfactory.com/connectors/oracle) [PG PostgreSQL](https://www.dreamfactory.com/connectors/postgresql) [My MySQL](https://www.dreamfactory.com/connectors/mysql) NoSQL & Docs [Dy DynamoDB](https://www.dreamfactory.com/connectors/dynamodb) [Do DocumentDB](https://www.dreamfactory.com/connectors/azure-documentdb) [Mo MongoDB](https://www.dreamfactory.com/connectors/mongodb) [Cb CouchDB](https://www.dreamfactory.com/connectors/couch-db) Cloud Warehouses [S3 S3](https://www.dreamfactory.com/connectors/amazon-s3) [Ab Azureblob](https://www.dreamfactory.com/connectors/azure-blob) [FS FTP/SFTP](https://www.dreamfactory.com/connectors/ftp-sftp) [LS Local Storage](https://www.dreamfactory.com/connectors/local-storage) C & SaaS [Sf Salesforce](https://www.dreamfactory.com/connectors/salesforce) [API REST / SOAP](https://www.dreamfactory.com/connectors/soap-to-rest) [See all 30+ connectors](https://www.dreamfactory.com/connectors) [![back arrow](https://blog.dreamfactory.com/hubfs/raw_assets/public/dreamfactory/images/orange-arrow.svg) Blog](https://blog.dreamfactory.com/) # Legacy System Modernization | Dreamfactory by Luke Marshall ![calendar icon](https://blog.dreamfactory.com/hubfs/raw_assets/public/dreamfactory/images/calendar-icon.svg) January 3, 2026 Table of contents RECOMMENDED ARTICLES - [A Complete Guide to API Generation](https://blog.dreamfactory.com/a-complete-guide-to-api-generation) - [10 Best API Management Tools](https://blog.dreamfactory.com/what-is-api-management-a-brief-overview-of-api-management-concepts-and-tools) - [Creating a Microsoft SQL Server API in Less Than 5 minutes with DreamFactory](https://blog.dreamfactory.com/creating-a-microsoft-sql-server-api-in-less-than-5-minutes-with-dreamfactory) - [Hasura vs. DreamFactory: A Comprehensive Comparison](https://blog.dreamfactory.com/hasura-vs-dreamfactory) - [Build A Snowflake REST API in Less Than 5 Minutes](https://blog.dreamfactory.com/generate-a-snowflake-rest-api-in-less-than-5-minutes) ![](https://blog.dreamfactory.com/hs-fs/hubfs/Imported_Blog_Media/6dDHofabCQ8-1024x576.jpg?width=1200&height=675&name=6dDHofabCQ8-1024x576.jpg) The **problems with legacy systems** can be extremely detrimental to the success of any business, especially one that primarily handles customer data. Business needs and demands are constantly changing and the type of software and systems we use or don’t use can be the difference between growth and stagnation. As a result of this, [legacy modernization](https://rtslabs.com/legacy-system-modernization-your-101-guide/) for many organizations is nonnegotiable. If you have current architecture or applications that prevent you from reaching your business goals, it may be time for legacy system modernization.  Regardless of the approach you take to modernization, it is important to know that it can be a complex and time-consuming process. But, if done correctly and with the right support, the results will far outweigh the risks.  **Contents:** - [What Is A Legacy System?](https://blog.dreamfactory.com/legacy-system-modernization#What-Is-A-Legacy-System) - [Problems with Legacy Systems](https://blog.dreamfactory.com/legacy-system-modernization#Problems-with-Legacy-Systems) - [What Is Legacy Modernization](https://blog.dreamfactory.com/legacy-system-modernization#What-Is-Legacy-Modernization) - [Migrating Legacy Systems](https://blog.dreamfactory.com/legacy-system-modernization#Migrating-Legacy-Systems) - [Legacy System Modernization Techniques](https://blog.dreamfactory.com/legacy-system-modernization#Legacy-System-Modernization-Techniques) - [DreamFactory and Legacy Systems ](https://blog.dreamfactory.com/legacy-system-modernization#DreamFactory-and-Legacy-Systems) ## **What Is a Legacy System?** In simple terms, a legacy system is any [old or antiquated form of technology](https://www.information-age.com/legacy-systems-next-financial-crisis-123465888/), application, software, tool, or computerized system that is outdated, but is it necessary for daily operations.   Did you know you can generate a full-featured, documented, and secure REST API in minutes using DreamFactory? Sign up for our **free 14 day hosted trial** to learn how! Our guided tour will show you how to create an API using an example MySQL database provided to you as part of the trial! [Create a REST API Now](https://genie.dreamfactory.com/register?utm_source=blog&utm_medium=Legacy%20System%20Modernization;utm_campaign=blog) ### **Problems with Legacy Systems ** What are some of the problems that organizations run into with legacy systems? Well, let’s find out. ·       Costs. The cost of maintaining the outdated computing systems usually outweighs the cost of purchasing new hardware and software components.  ·       Understanding. The technology world has greatly developed, and the new intake of employees are mostly familiar with the newer technological systems. Staff who are experts in running legacy systems are already getting old and even retiring.  ·       Integration. It is almost impossible to integrate data between legacy systems and newer technologies since they operate on entirely different software.  ·       Security. Legacy systems are highly vulnerable to [security threats](https://www.computerweekly.com/news/252464666/Legacy-IT-systems-a-significant-security-challenge). This is why DreamFactory is available to help you replace legacy systems. ·       Productivity. It is common to experience low efficiency with legacy systems. This is as a result of security vulnerabilities caused by ineffective production configurations.  ## **What Is Legacy Modernization? ** Legacy modernization refers to the process of redesigning, rewriting, converting or moving a legacy system to a modern computing software, protocols, and hardware platform. Legacy system modernization is aimed at transforming a legacy system in order to enjoy the benefits of modern technological innovations while still preserving and extending the value of the legacy investment.  ## **Migrating Legacy Systems** Migrating legacy systems is carried out by businesses that have demonstrated to receptiveness to changes in technology. The [migration of legacy systems](https://www.altexsoft.com/whitepapers/legacy-system-modernization-how-to-transform-the-enterprise-for-digital-future/) is necessary in order to successfully enhance performance and maintainability. Moreover, it is vital to migrate legacy systems in order to protect valuable data about your customers that are stored in the old system.  ### **Legacy System Modernization Techniques** ·       **Encapsulation** DreamFactory optimizes this legacy modernization technique to recycle different parts of legacy software. How do we do this? Well, with an [API](https://www.gartner.com/smarterwithgartner/put-apis-at-the-center-of-your-digital-business-platform/), we use this technique to link the code (still in its present environment) to the newly developed presentation and accesses layers. Reach out to DreamFactory, so we can enable you to take advantage of the application and maximize its benefits and characteristics.  Although this legacy system modernization technique is one of the most effective and efficient IT solutions. It is however pertinent to expound that encapsulation does not cater for problems that are inherent in the system. Encapsulation primarily focuses on developing the interface. This means there would be no maintenance and upgrading of the internal components of the legacy system.  ·       **Rehosting** As a legacy system modernization technique, rehosting is the transfer of a business's mainframe application to other hardware, virtual or cloud storage without causing any alterations to the application. The benefit of allowing DreamFactory to employ this is that it is not only cost-effective, but also guarantees minimum risks. Rehosting is a time-saving technique that guarantees the exactness of your system operations without any changes in the close. DreamFactory will help you to achieve power and cooling conditions, reduce costs of purchase, and reduce space usage by smoothly helping you to switch to X86 infrastructure systems.  ·       **Replatform Migrations** Do you know that you can preserve the existing functionality of your system, and at the same time upgrade your system code with a little adjustment? This is a normal routine carried out at DreamFactory. This technique involves the utilization of auto-scaling. This is a feature that adds or extracts compute resources. This consequently helps to restore the desired usefulness of cloud storage. DreamFactory enables the functionality of base cloud and cost-effectiveness without the resource commitments that are mandated for refactoring.  ·       **Code Refactoring** DreamFactory uses this technique to modify and upgrade an existing code without causing alterations in its external behavior. The benefit of this technique can be seen in its ability to solve it issues and also optimize the functionality of the component. By re-coding certain parts of your application, DreamFactory would be helping you to optimize functional cost efficiency in the cloud.  ·       **Rearchitecting** This legacy modernization technique entails moving to a new application infrastructure while changing the code. DreamFactory uses this method to fully maximize the new and improved functions of the platform. It is necessary to keep in mind that this technique is not very expensive, neither is it cheap. It has a reasonable cost and it comes with average risks.  You should also know that this technique would elicit average outcomes too. This technique helps businesses to increase their partnerships by increasing integration functions. In order to do this, DreamFactory would have to first help your business to shift from an internal legacy system and adopt new technological innovations and internal transformations that are necessary for tech-based partnerships.  ·       **Rebuilding/Redesigning** By employing this technique, DreamFactory would rewrite the components of your application from the beginning. As we redesign your system, our professionals will preserve the scope and specifications of your application components. The benefit of this technique is that it allows DreamFactory to reconstruct your application and make it accessible to newer features, functions and processes. You can call on DreamFactory to use this technique to tap into the limitless opportunities.  Did you know you can generate a full-featured, documented, and secure REST API in minutes using DreamFactory? Sign up for our **free 14 day hosted trial** to learn how! Our guided tour will show you how to create an API using an example MySQL database provided to you as part of the trial! [Create a REST API Now](https://genie.dreamfactory.com/register?utm_source=blog&utm_medium=Legacy%20System%20Modernization;utm_campaign=blog) ## **DreamFactory and Legacy Systems ** Migrating legacy systems to a new application platform can be quite a challenging process. However, DreamFactory is highly qualified and experienced to replace legacy systemsand make sure your data migration happens smoothly. Data migration is a necessary step in this rapidly developing world. Contact DreamFactory today to keep your business on the cutting edge and ahead of the competition. TAGS: [Legacy Systems](https://blog.dreamfactory.com/tag/legacy-systems) ![Luke Marshall](https://blog.dreamfactory.com/hs-fs/hubfs/8c4e2b22954d63832d6d5e726074e09f.png?width=100&height=100&name=8c4e2b22954d63832d6d5e726074e09f.png) Luke Marshall Luke has extensive experience in digital transformation projects in both the public and private sector. Heading up DreamFactory as the General Manager, Luke has been able to help clients across the globe unlock the potential of an API lead strategy as they seek to exploit the full potential of their ever expanding data sources. Stay Connected with The Connector Newsletter! Subscribe to stay up-to-date with DreamFactory's latest product updates, API best practices, and tech humor in your inbox. 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