Custom software is attractive because it can be designed around the business.

It is also software the business now owns.

That means the decision should include more than the cost of building version one.

Start with the differentiated requirement

Ask:

What does the business need that available products do not provide?

If the answer is mostly:

• custom fields;
• different terminology;
• a few approval steps;
• branded screens;
• integrations;

then configured SaaS may be a better answer.

Those requirements are common enough that mature platforms often support them.

Custom becomes interesting when the workflow is the advantage

A custom application can make sense when:

• the process is genuinely unique;
• speed or automation creates material economic value;
• available products force expensive workarounds;
• the application connects several proprietary workflows;
• the company can support ongoing product ownership.

The important word is material.

Unique does not automatically mean valuable.

SaaS carries constraints on purpose

A SaaS platform limits some choices.

In exchange, the vendor owns:

• infrastructure;
• updates;
• security patching;
• much of the support burden;
• product roadmap;
• standard integrations.

Those constraints can save a business enormous time.

The correct question is whether the constraints interfere with something important.

Custom software creates a permanent product

After launch, someone still has to own:

• bug fixes;
• hosting;
• backups;
• security;
• authentication;
• browser/device changes;
• integrations;
• user support;
• enhancements;
• documentation.

The developer who built version one may not be available forever.

Plan for ownership from the beginning.

Consider configured and integrated SaaS as a middle path

Many business requirements do not need a fully custom product.

A strong architecture can combine:

• SaaS application;
• workflow automation;
• integration;
• reporting;
• lightweight custom interface;
• existing identity platform.

That can provide a tailored operating model without creating an entire software company inside the business.

Model the economics

Compare more than project price.

For SaaS:

• subscriptions;
• implementation;
• add-ons;
• integrations;
• usage fees;
• vendor dependence.

For custom:

• design;
• development;
• hosting;
• maintenance;
• support;
• upgrades;
• future development;
• internal ownership.

Then compare those costs against the value of the workflow.

Avoid building because the current software is annoying

Frustration is useful evidence.

It is not yet a requirements document.

Before choosing custom development, define which constraints actually affect revenue, cost, service, risk, or growth.

The answer may be a better SaaS platform rather than custom code.

Loginect’s Data & Cloud Applications and Technology Consulting work helps businesses evaluate that tradeoff before committing to a build.