Gartner Research

Guidance Framework for Modernizing .NET Applications

Published: 09 January 2020

ID: G00377437

Analyst(s): Matt Brasier, Fintan Ryan

Summary

Heritage .NET applications are critical to many enterprises but need major investment to bring them into line with modern architectural approaches. Application technical professionals should use this guidance framework to modernize their .NET applications.

Table Of Contents

Problem Statement

The Gartner Approach

The Guidance Framework

  • Prework: Identify Business Goals and Constraints
    • Identify Unsupported and Near-End-of-Life Platforms
    • Identify Business Needs
    • Use Pace Layers to Identify Opportunities
    • Platform Infrastructure Support Goals
    • Guidance
  • Step 1: Evaluate and Classify Application
    • Review the State of the Current Application
    • Check for the Use of Cloud-Hostile and Cloud-Unfriendly Technologies
    • .NET Standard
    • Identify .NET Framework Components Not Moving to .NET Core
    • Analyzing an Application
    • Guidance
  • Step 2: Select Modernization Approach
    • Choose and Apply Architectural Approaches
    • Guidance
  • Step 3: Update Your Development Tooling and Practices
    • Core Development Tools
    • Create or Update CI/CD Pipelines
    • Update Your Build and Packaging Systems
    • Windows Containers
    • aPaaS and fPaaS Offerings
    • Guidance
  • Step 4: Modernize Your Application
    • Revise
    • Rearchitect
    • Rebuild
    • Guidance
  • Step 5: Establish Monitoring and Feedback
    • Guidance

Risks and Pitfalls

  • Modernization as a One-Off Effort
  • Overly Ambitious Modernization Leads to High Cost
  • Failure to Retire Applications When Appropriate
  • Related Guidance

Gartner Recommended Reading

©2020 Gartner, Inc. and/or its affiliates. All rights reserved. Gartner is a registered trademark of Gartner, Inc. and its affiliates. This publication may not be reproduced or distributed in any form without Gartner’s prior written permission. It consists of the opinions of Gartner’s research organization, which should not be construed as statements of fact. While the information contained in this publication has been obtained from sources believed to be reliable, Gartner disclaims all warranties as to the accuracy, completeness or adequacy of such information. Although Gartner research may address legal and financial issues, Gartner does not provide legal or investment advice and its research should not be construed or used as such. Your access and use of this publication are governed by Gartner’s Usage Policy. Gartner prides itself on its reputation for independence and objectivity. Its research is produced independently by its research organization without input or influence from any third party. For further information, see Guiding Principles on Independence and Objectivity.

Already have a Gartner Account?

Log In

Become a client

Learn how to access this content as a Gartner client.

Learn More