April 26, 2024
min read

Redesigning UX to Improve SaaS Adoption: Law of Uniform Connection

Make Apps Easy to Love! Discover how harnessing the power of Miller's Law and it's rule of 7 can transform your SaaS experience, captivating users through seamless design and intuitive interfaces.

Written by

Marc Chia

Redesigning UX for SaaS Adoption: Miller's Law

In the fast-paced world of software-as-a-service (SaaS), user experience (UX) plays a pivotal role in determining the success of a product. As a UX/UI designer, understanding and implementing principles that enhance user adoption is crucial. One such principle that holds immense value in this context is Miller's Law. In this article, we'll delve into what Miller's Law is, how it applies to UX/UI design, and provide examples of its implementation to improve SaaS adoption.

What is Miller's Law?

Miller's Law, formulated by cognitive psychologist George A. Miller in 1956, is a concept that deals with the human cognitive capacity for processing information. The law suggests that the average person can only hold about 7 (plus or minus 2) items in their working memory at a time. In other words, people can comfortably process and remember around 5 to 9 chunks of information before their cognitive load becomes overwhelming.

This principle has profound implications for designing user interfaces, especially in the context of SaaS products, where ease of adoption is a key factor in user engagement.

Applying Miller's Law to UX/UI Design

When it comes to UX/UI design, adhering to Miller's Law can significantly enhance the user experience and facilitate the adoption of SaaS products. Here's how this principle can be applied:

1. Simplify Information Presentation:

Given the limited capacity of working memory, presenting information in a simplified and organized manner is crucial. Break down complex tasks or information into smaller, manageable chunks. This could involve using clear headings, bullet points, and concise sentences to make it easier for users to process information.

2. Minimize Cognitive Load:

Cognitive load refers to the mental effort required to process information. By reducing cognitive load, you can create a smoother user experience. Avoid overwhelming users with excessive choices or intricate navigation. Stick to a minimalist design approach that focuses on the essentials, ensuring that users can easily comprehend the available options.

3. Prioritize Information Hierarchy:

Miller's Law reinforces the importance of prioritizing information hierarchy. Present the most critical information first, followed by details that can be explored later. This approach aligns with the limited capacity of working memory and ensures that users grasp the core functionality of the SaaS product before delving into finer details.

Examples of Using Miller's Law

Let's explore some practical examples of how Miller's Law can be implemented to redesign UX for improved SaaS adoption:

1. Onboarding Process:

When a user first encounters a SaaS product, the onboarding process is crucial. Instead of bombarding users with a myriad of features and options, introduce them to the core functionalities step by step. For instance, a project management tool could initially guide users through creating a project, adding tasks, and assigning deadlines. Once users are comfortable with these basics, they can explore advanced features.

2. Data Input Forms:

In SaaS products that involve data input, such as CRM systems, adhering to Miller's Law can streamline the experience. Design data entry forms with a limited number of fields visible at a time. As users complete each section, they can move on to the next, preventing them from feeling overwhelmed by the entire form.

3. Dashboard Design:

Dashboards are a central element of many SaaS products. To enhance user adoption, prioritize the display of key metrics and insights. Offer users the option to drill down for more detailed information, but initially, present them with a concise overview that aligns with the capacity of their working memory.

4. Feature Discoverability:

When introducing new features or updates, ensure that users are informed in a way that respects their cognitive limitations. Highlight the most relevant changes and guide users on how to access and use these features. Over time, users can explore additional features as they become more comfortable with the product.


Miller's Law serves as a guiding principle in designing user experiences that are aligned with human cognitive capabilities. By simplifying information presentation, minimizing cognitive load, and prioritizing information hierarchy, UX/UI designers can create SaaS products that are intuitive, user-friendly, and conducive to higher adoption rates. Redesigning the UX with Miller's Law in mind empowers users to engage with the product more effectively, ultimately contributing to the success of the SaaS offering in an increasingly competitive landscape.

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