The average mid-size company uses 137 SaaS applications — and employees estimate they use only about 60% of the features in the tools they do use. That means roughly 40% of your software spending is waste: unused licenses, redundant tools, and features nobody touches.

Why Tech Stack Debt Accumulates Tech stack debt grows the same way closet clutter does:

Someone buys a tool to solve an immediate problem without checking if an existing tool could do it
Free trials convert to paid subscriptions and nobody cancels
Acquisitions and team merges bring duplicate tools
"Shadow IT" — teams buy tools on their own credit cards without IT knowing
Switching costs feel high, so you keep paying for tools you've outgrown

The Tech Stack Audit Process Step 1: Inventory Everything Create a complete list of every software tool in use:

Tool name and vendor
Monthly/annual cost
Number of licenses vs. active users
Primary owner (who manages it?)
What business function does it serve?
What other tools does it integrate with?

Pro tip: Check your company credit card statements and expense reports. You'll find tools nobody remembers buying.

Step 2: Categorize by Function Group tools by business function:

CRM & Sales
Marketing & Analytics
Communication & Collaboration
Project Management & Productivity
Finance & Accounting
HR & People
Customer Support
Development & IT

Flag any function with 2+ tools — that's potential redundancy.

Step 3: Score Each Tool (1-5 Scale)

Utilization: How many licensed users actively use it? (Low/High)
Criticality: What happens if it goes down tomorrow? (Low/High)
Satisfaction: How happy are users? (Low/High)
Integration: How well does it connect to your other tools? (Low/High)
Cost Efficiency: Cost per active user per month (Low/High)

Step 4: Decide: Keep, Replace, Consolidate, or Eliminate | Score | Action | |-------|--------| | High across all | Keep — core tool | | High criticality, low satisfaction | Replace — find a better option | | Low utilization, low criticality | Eliminate — cancel immediately | | Redundant with another tool | Consolidate — migrate users to the stronger tool |

The Consolidation Opportunity Most companies can reduce tool count by 20-30% through consolidation alone:

Do you need Slack AND Teams AND email? Pick one primary channel.
Is your project management tool also doing what your task manager does?
Can your CRM handle email marketing, or do you need a separate tool?

Calculating Total Cost of Ownership (TCO) Subscription price isn't the real cost. TCO includes:

Subscription fees
Implementation/setup time
Training time for users
Ongoing administration
Integration maintenance
Data migration costs (if replacing)
Productivity loss during transitions

A "cheaper" tool with high switching costs may actually cost more than keeping the expensive one.

Annual Tech Stack Review Schedule an annual review:

Update the inventory
Re-score all tools
Evaluate new options for underperforming tools
Negotiate renewals (always negotiate — SaaS companies expect it)
Set budget for next year based on actual usage, not wishful thinking

Technology Strategy Playbook

Tech Stack Audit & Rationalization

Tech Savvy