What is parallel adoption? - Definition from WhatIs.com


parallel adoption

Part of the Project management glossary:

Parallel adoption is a method of hardware or software migration that involves using the existing and new systems simultaneously until the implementation is judged to be complete and satisfactory.

During the transition, users work with both systems as they gradually learn the new software. There is generally some duplication of effort as, for example, data must be entered in both systems. That duplication can lead to data quality issues. If the two systems aren’t fully compatible, parallel adoption is not a viable migration method.

Parallel adoption is the most foolproof and user-friendly implementation method.  However, it can also be the most time-consuming option and is usually the most expensive.  Other software migration models include big bang adoption, phased rollout and pilot conversion.

This was last updated in February 2014
Contributor(s): Ivy Wigmore
Posted by: Margaret Rouse

Related Terms


  • gig economy

    - The gig economy is a business environment in which temporary positions are common and organizations contract with independent workers for short-term engagements. (WhatIs.com)

  • born digital

    - Born digital, in reference to people, is a description of individuals who have grown up with the current state of near-ubiquitous computing, enabled by technology like smartphones and pervasive wir... (WhatIs.com)

  • corporate performance

    - Corporate performance is a composite assessment of how well an organization executes on its most important parameters, typically financial, market and shareholder performance. (WhatIs.com)


  • Project management

    - Terms related to project management, including definitions about project management methodologies and tools.

  • Internet applications

    - This WhatIs.com glossary contains terms related to Internet applications, including definitions about Software as a Service (SaaS) delivery models and words and phrases about web sites, e-commerce ...

Ask a Question About parallel adoptionPowered by ITKnowledgeExchange.com

Get answers from your peers on your most technical challenges

Tech TalkComment



    Contribute to the conversation

    All fields are required. Comments will appear at the bottom of the article.