Custom software, explained
IBM describes custom software development as designing, building, deploying and maintaining software for a specific set of users, functions or organizations. Off-the-shelf software is built for a broad set of needs, so it can be packaged and sold to many buyers.
Neither is better by default. If a product already does the job, buying it is usually faster. Custom software earns its cost when the job is special to how your business works and the gap shows up every week. It also needs someone to look after it once it is built.
When should a business build custom software?
When the job is central to how you work, no product covers it without heavy workarounds, and someone will own it after launch. If a product already covers most of the job, buy it and adjust the process a little instead.
What does custom software look like?
It can be a customer app, an internal tool, a link between two systems, or an AI assistant set up for your own records. What makes it custom is who it is built for, not how big it is.
Questions
What is the difference between custom and off-the-shelf software?
Custom software is built for one organization’s needs. Off-the-shelf software is built for many buyers and sold ready to use.
Who looks after custom software once it is built?
Someone has to. Upkeep is part of the work, so decide who will fix it, update it and pay to run it before the build starts.
Where we use this term
Sources
Definition checked against these sources and our own pages on .