In the world of startups and the IT industry, the product is often developed much faster than the legal infrastructure that protects it. Teams first create prototypes, APIs, beta versions, functionalities, and user flows — and only when an investor, a major client, or a partner appears, they ask the question:
“Do we maybe need some kind of contract…?”

The answer is always the same:
Yes — you should have had it yesterday.

Contracts are not bureaucracy. They are a protective shield around your product, code, database, trade secrets, and the company’s reputation. Three documents form the foundation of every IT product and every SaaS service:

1. NDA — Non-Disclosure Agreement
2. Terms of Service (ToS) — Terms of Use
3. Acceptable Use Policy (AUP) — Acceptable Use Policy

NDA (Non-Disclosure Agreement) — the first shield for your idea, code, and documentation. in IT

What is an NDA and why do you need it?

An NDA is the most basic document for every IT company. Its purpose is simple:
it prevents the other party from using or sharing the information they receive during discussions, collaboration, or integration.

In practice, startups most often use NDAs when:

• they present an early version of the product to an investor,
• they share API documentation with a potential partner,
• they hire a freelancer or an outsourcing agency,
• they grant access to the repo or the code,
• they conduct technical demonstrations (demo day, hackathon, pitch meeting),
• they send a wireframe, architecture, or technical description of the product.

Without an NDA, any information you share can be:
– used without permission,
– shared with third parties,
– implemented into someone else’s product,
– used competitively.

And the worst part: proving damage without an NDA is almost impossible.!

What must a good NDA include?

✔ A clear definition of confidential information
✔ Who is allowed to access the information
✔ The duration of the confidentiality obligation (usually 3–10 years)
✔ A prohibition on using the information for any purpose other than the agreed one
✔ A rule on destroying/returning the information
✔ Legal consequences of a breach
✔ Jurisdiction (recommendation: Serbia/EU)
✔ A prohibition on copying code, documentation, data, and algorithms

Terms of Service (ToS) — the most important contract of every SaaS product in IT

If you have a SaaS application, platform, mobile app, marketplace, API service, or any kind of digital product that users actively use — The Terms of Service are your most important legal document.

ToS is a contract between you and the usera contract between you and the user.

In practice, the ToS:

• protects your product,
• defines what the user may and may not do,
• sets the developer’s liability.
• prevents lawsuits due to system errors.
• regulates payments and refunds,
• gives you the legal basis to block a user.

Why is the ToS crucial for SaaS services?

1. It legally limits your liability

Downtime, a bug, an error in the code, a server crash — all are situations in which a client could claim damages if you don’t have a contract. The ToS protects you through:

• Limitation of Liability clauses
• Disclaimer clauses
• Error and outage rules

2. It allows you to suspend a user

Without a ToS, any account suspension can be legally risky.

3. It protects your intellectual property

The ToS clearly states that:

• code,
• design,
• architecture,
• brend,
• the content of the application

is your property and cannot be copied, reproduced, modified, or sold.

4. It regulates payment

The ToS introduces rules for:

• subscription models,
• automatic renewal,
• reundation,
• the billing currency,
• late payment fees.

5. It prevents misuse of the service

Users must know what is allowed and what is not — and you must have the legal basis to react.

Acceptable Use Policy (AUP) — the rules that prevent system abuse

An AUP is a document that often “flies under the radar” for startups, yet it is actually crucial for SaaS and any digital service that allows:

• content uploads,
• the use of API calls,
• data generation
• connecting external services,
• using chat features,
• integrations with others.

While the ToS explains how the service works,
the AUP explains how the user MUST NOT use it.

Why do you need an AUP?

An AUP protects your company from:

• cyberattacks by users,
• spam and bot activity,
• illegal content,
• excessive resource usage,
• phishing and fraudulent activities,
• legal liability if a user does something illegal.

Without an AUP, a user who sends phishing messages can claim:
“Nowhere does it say that I’m not allowed to do that!”

And — they would be right.

Which documents do you need in which situation?

Situation	Mandatory documents
Negotiations with an investor	NDA
You hire a freelancer	NDA + service agreement
You grant access to the code or the repository	NDA
launching a SaaS product	ToS + AUP + Privacy Policy
You work with EU data	Privacy Policy + DPA
You sell a software license	Licensing Agreement + ToS
You give API access	NDA + AUP + ToS
Beta testing	NDA + ToS

5. What does a typical problem look like when these contracts are not prepared?

Problem 1: A freelancer steals part of the code

Without an NDA and an IP clause — you have no basis to demand removal or compensation.

Problem 2: A user misuses the SaaS service

If an AUP does not exist — you cannot suspend them without legal risk.

Problem 3: A client claims compensation for damages due to downtime

Without ToS with Limitation of Liability Without a limitation clause — you are liable for the full amount.

Problem 4: A partner shares your API documentation with a third party

Without an NDA — it is practically “allowed.”

6. How much does a mistake in legal protection cost?

Startups usually think they are “not big enough” for lawyers.
However:

• An error caused by 2 hours of downtime can cost more than the price of a complete ToS.
• Losing API code can stall a project for months.
• Abuse of the platform can lead to a police investigation or domain blocking.
• An investor may walk away if the documentation is not ready.

In practice, 80% of problems in the IT sector can be prevented with simple documents.

7. Conclusion — legal documentation is not a cost, but part of the product

A SaaS product is not just code.
This is a technical, business, and legal system.

NDA, ToS, and AUP are the foundation of that system because they enable:

• the protection of code and data,
• security of the platform,
• control over users.
• legal certainty.
• safe cooperation with investors and partners.

If you are developing a digital product, the best time to prepare these documents is:
before you send the first version to anyone.