How to Optimize SaaS Spending: What to Keep, What to Right-Size and When to Build Custom Applications

Executive Summary

Managing SaaS spending requires more than reducing subscription costs. Businesses need to understand how their applications support daily operations and where better alternatives can create value.

  • License optimization: Identify inactive seats, unused features and overlapping subscriptions.
  • Cost management: Evaluate renewal pricing and total cost of ownership (TCO).
  • Application rationalization: Decide which platforms to retain, consolidate or right-size.
  • Custom development: Identify workflows that could benefit from purpose-built applications.
  • AI automation: Improve existing processes through AI agents and integrated workflows.

A structured approach helps organizations control software spending while improving operational efficiency and application ownership.

Why Are Businesses Overspending on SaaS?

Five common challenges contribute to unnecessary software expenditure:

  • Unused licenses: nactive accounts continue renewing despite limited usage.
  • Feature underutilization: Businesses pay for complete suites while using only a few capabilities.
  • Rising subscription costs: Per-user pricing and annual increases raise expenditure without proportional value.
  • Disconnected workflows: Employees rely on spreadsheets, emails and manual approvals alongside existing platforms.
  • Fragmented data: Information remains distributed across applications, increasing integration effort and limiting AI readiness.

How to Decide: Renew, Right-Size or Build?

Evaluate each application against its business value, operational requirements and long-term cost.

Decision When it makes sense
Renew The platform supports essential operations and delivers value across its features.
Right-size The platform is useful, but licenses, tiers or add-ons exceed actual requirements.
Build custom Specialized workflows, integrations or business rules justify a purpose-built application.

Before choosing custom development, compare subscription costs against development, hosting, maintenance, security and support expenses. Consider implementation of risks, expected productivity gains and long-term ownership.

How Can Businesses Build Around Existing SaaS?

Two approaches can address workflow gaps:

  • AI agent integration: Connect AI agents to existing applications to automate data entry, policy checks, approval routing and status updates.
  • Custom application development: Build applications around proprietary workflows and business rules while retaining essential enterprise systems.

Both approaches require secure API integrations, role-based access controls, data protection, audit trails and human oversight for sensitive actions. Governance should be established before deployment.

The Role of Forward Deployed Engineers

Forward Deployed Engineers (FDEs) work closely with business teams to understand operational challenges and translate them into working technology solutions.

Their responsibilities include:

  • Mapping existing workflows and identifying inefficiencies.
  • Understanding business rules, data flows and integration requirements.
  • Developing AI agents or purpose-built applications.
  • Testing solutions with actual users and refining them based on feedback.
  • Supporting deployment, governance and continuous improvement.

This approach connects business requirements directly with engineering execution, helping organizations validate solutions against real operational needs.

Business Impact: What Should Organizations Measure?

Impact area Suggested KPI
SaaS spending Annual subscription cost and cost per active user
License utilization Percentage of active licenses
Productivity Time spent completing each workflow
Automation Percentage of tasks automated
Operational efficiency Approval turnaround and processing time
Application ownership Maintenance cost and change implementation time

These metrics establish a baseline and help measure improvements after implementation. Actual results depend on the application, workflow and deployment scope.

How Custom Applications Complement Existing Systems

A North American environmental services provider relied on paper-based purchase requisitions, creating fragmented workflows and communication gaps.

OptiSol developed a mobile workflow application integrated with Dynamics AX, enabling real-time approvals and status visibility while reducing manual dependency.

The published outcome demonstrates improved workflow visibility and reduced communication gaps. No verified numerical improvement figures are currently available for this case study.

Conclusion

Optimizing SaaS spending is about making better technology decisions, not simply reducing the number of applications.

Retain platforms that deliver value, right-size unnecessary subscriptions and build custom solutions where specialized workflows justify the investment. With AI agents and Forward Deployed Engineers, businesses can improve existing systems while developing applications that better reflect their operational needs.

Build your business needs. Make every application investment count.

FAQs:

How can businesses reduce SaaS spending?

Audit license usage, remove inactive seats, consolidate overlapping applications and review renewal terms.

What is SaaS application rationalization?

It is the process of evaluating software applications to determine which to retain, consolidate, right-size or replace.

When should a company build a custom application?

When existing platforms cannot efficiently support specialized workflows and the expected benefits justify development and ownership costs.

Can AI agents work with existing SaaS tools?

Yes. Through secure integrations, AI agents can automate repetitive tasks while following defined access and governance controls.

What do Forward Deployed Engineers do?

They work alongside business teams to understand challenges, develop tailored solutions and integrate them into existing workflows.

Do companies need to replace all their SaaS applications?

No. Businesses can retain valuable platforms and build around selected workflows that require additional flexibility.

How can businesses measure the success of custom applications?

Track changes in processing time, manual effort, automation rates, application costs and user adoption.

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