Walk through any organization's software list and you will find the same job done by several tools. Three video-conferencing products. Two project-management platforms. Five file-sharing services. Each was a sensible choice for the team that bought it. Together, they mean paying several times for one capability, maintaining several integrations, and protecting several sets of data.
Application rationalization is the structured way to fix that: decide which tools to keep, which to invest in, and which to retire.
Why overlap builds up
Overlap is a side effect of how software is bought today. Zylo's 2025 data shows lines of business control 70% of SaaS spend, so different teams solve the same problem independently, usually with a credit card and a free trial. Mergers add a second layer: every acquisition brings its own collaboration, CRM and finance tools.
The cost is more than the duplicate license. Each extra tool needs its own security review, single sign-on setup, integrations, admin time and training, and each one holds a copy of company data that must be protected and eventually deleted.
Step 1: Map tools to capabilities
List every application and tag it with the business capability it serves: video meetings, project management, e-signature, diagramming, file sharing, analytics. Overlaps become obvious as soon as several tools share a tag.
Step 2: Score each tool
For each overlapping tool, score two dimensions from 1 to 5:
- Business value: how many people use it, how critical it is, how well it serves the need.
- Technical fit: security, integration with your identity provider and core systems, vendor stability, cost per active user.
Step 3: Decide with the TIME model
The TIME model, a common framework in application portfolio management, maps each tool to one of four actions.
High value, good fit. Make it the standard and move others onto it.
Good fit but low value. Keep for now, without expanding it.
High value but poor fit. Replace with a better tool that keeps the value.
Low value and poor fit. Retire it.
Step 4: Count the cost of switching
Consolidation savings are real, but so are migration costs: data transfer, retraining, integration rework and, sometimes, early-termination fees. Compare the annual license saving with the one-time switching cost and the contract dates.
Step 5: Plan and communicate the migration
- Announce the standard
Name the tool that stays and the date the old one retires, with the reason.
- Migrate data and train users
Move projects, files and templates before the retirement date, and offer short training sessions.
- Cancel in writing
Send cancellation before the notice deadline, and keep the confirmation.
- Close the door behind you
Remove the old app from single sign-on, block new purchases through the approval process, and close the budget line.
Keeping the portfolio lean
- Publish a catalog of standard tools per capability, so teams can find what already exists.
- Check the catalog in every software approval.
- Review the portfolio once a year and new purchases every quarter.
- Involve business owners: they know the value, IT knows the fit.
- Forcing a single tool where two teams have genuinely different needs.
- Announcing retirements before checking contract exit dates.
- Leaving retired tools connected to single sign-on.
- Treating free tools as harmless: they still hold company data.
How MI One helps
Frequently asked questions
How often should we rationalize applications?
A full review every year, with a quick check of new purchases every quarter.
Should IT decide alone?
No. Business owners know the value; IT knows the fit. Decide together, with finance providing the cost picture.
What if two teams refuse to give up their tool?
Use data: active users, cost per active user and security fit. If both tools are genuinely needed, tolerate both and stop further spread.
What about tools that came with an acquisition?
Map them into the same capability list and apply the same scoring. Acquisitions are often the best moment to consolidate, because contracts are being reviewed anyway. See software compliance in M&A.
Sources
- Zylo, "2025 SaaS Management Index," January 16, 2025. https://zylo.com/news/2025-saas-management-index