Extensibility First DESIGN

Modern Software as a Service (SaaS), eCommerce and digital products in general that are built with Extensibility (E11Y) first approach are better.

Here's why...

Why Extensibility Matters?

Imagine this: you’ve built a groundbreaking app that’s gaining traction fast. But as you scale, you start noticing something—your prospects, users and customers want more.

They need features you didn’t anticipate, integrations that weren’t on your radar, and customizations that go beyond your original vision.

Do you scrap everything and start over? Of course not.

This is where extensibility shines.Simply put, extensibility is your software’s superpower—the ability to grow, adapt, and evolve without rebuilding the core.

Think of it like adding rooms to a house as your family grows, instead of packing up and moving every time you need more space.

For software companies, extensibility means faster innovation. New features, integrations, and customizations can be rolled out without going back to the drawing board, saving time and development costs. For users, it means a product that molds to their needs, not the other way around—boosting satisfaction and loyalty.

Extensibility isn’t just about adding features; it’s about empowering teams and ecosystems to drive innovation. From Internal Developer Platforms that enhance engineering workflows, to Product Discovery Platforms that enable cross-functional teams to rapidly test and iterate, extensibility is a game-changer. And when it comes to Ecosystem Platforms—think plugin marketplaces, SDKs, and APIs—it unlocks entirely new ways to add value and connect with users, partners, and developers alike.

In the world of software, extensibility isn’t just a technical buzzword. It’s a strategic advantage. It lets companies stay agile, delivering more without starting from scratch. And it gives users the flexibility to shape the product to fit their exact needs.

Extensibility is a win-win for everyone involved. Companies can innovate more efficiently, while users get a more customizable and adaptable product. It's like the Swiss Army Knife of software development – versatile, flexible, and always ready for whatever challenges come its way.

Join our community as we explore, experiment and celebrate the successes and learnings of those committed to leading through E11Y.

Faster, safer
time-to-market

When it comes to product development, speed is everything. Research has shown that companies with faster time to market (TTM) enjoy clear advantages in terms of market share, revenue, and sales growth. By establishing a faster and safer way to bring new ideas to customers, companies can reduce the risk of expensive, time-consuming product development cycles.

Protect core systems

As companies evolve, they often find themselves with a set of stable core systems that are crucial to their success. However, as they innovate and grow, they also introduce more complex, dynamically changing aspects that can cause headaches and disruptions down the line. That's where E11Y comes in.

Access to global talent

The tech industry is growing at an unprecedented rate, and the demand for skilled professionals is higher than ever. In fact, a recent study found that the demand for tech jobs in June 2021 was 42% higher than it was at the same time in 2019.  E11Y helps companies assemble the right team for the job, whether for short-term projects or long-term partnerships.

Security practices and governance

Well designed E11Y approaches improve Security practises through clearer contracts between services and well-defined Governance models, workflows, auditing and reporting.

Improve stickiness and reduce churn

If generating new customer value through new feature developments, integrations into existing tools and workflows is key to retention then E11Y-first approaches are an ideal strategic investment at any stage.

Customer perceived value

The more you can solve specific customer problems, the greater the perceived benefit of your solutions to your customers. With E11Y, product teams work more efficiently and ecosystems are empowered to solve community-wide problems. Customers with specific challenges can even solve their own feature gap needs.

Product performance & reliability

By abstracting experimental features to the E11Y layers, core teams improve their chances of maintaining and optimising performance and stability of the services.

Culture of innovation

E11Y-first approaches unlock multiple new channels for internal and external innovation. Hackathons and Hackdays, design challenges, innovation stimulus funds, accelerators and incubators.

ROI from solving customer problems

When the cost of development and shipping new features is drastically reduced, it stands to reason that there is a greater return on investment for product teams that are solving more and increasingly niche customer problems.

What makes an Extensible Architecture?

How do you know if your architecture follows extensibility principles? Use these heuristics to determine how your architecture can evolve and where investments should be made.

What can be Extensible?

Integration

Business processes span multiple enterprise applications and external web services. Data moves in between several downstream and upstream systems. These processes should be well integrated to provide a cohesive and seamless experience for the end-users.

User Interface

For an application to be successful within an enterprise, user interface (UI) is key. UI should be intuitive, highly configurable, performant, and mobile.

Processes

It is essential to automate the mundane, repetitive tasks to allow the end-user to focus on the high-value task and minimize room for errors. The processes should be highly adaptable and supported by tools that non-programmers can easily use.

Data Model

The existing data model can be extended with new data types, including custom data types with out fear of breaking or corrupting valuable data and analytics workflows.

Who's Extensible?

These companies are creating ecosystem value and driving innovation through E11Y.

MORE E11Y COMPANIES

Who Builds Extensions?

These developers are generating success by innovating with E11Y features provided by platforms.

MORE E11Y DEVELOPERS
Kirikll photo

Kirill Zakharov

Head of Design @ Unsplash

David photo

David Williames

Figma Plugin developer

Kristina photo

Kristin Baumann

Figma Plugin Developer

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Zeplin logo
Mural logo

The E11Y eco-system

E11Y is not an island - it intersects, overlaps, feeds and consumes from multiple adjacent categories across the technology landscape.

BROWSE E11Y PROVIDERS

Extensibility  for Startup Stages

The concept of extensibility may vary depending on an individual's role within a company and the specific dynamics of the organization. One way to understand how extensibility can be valuable is to consider specific characterizations and attributes of the company through the use of personas.

Exploration Startup

An “Exploration Startup” can leverage extensibility to rapidly iterate prototypical ideas in order to demonstrate a key hypothesis of their vision. This beats a powerpoint presentation hands down, every time. Show, don't tell.

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Traction Startup

A “Traction Startup” can defend the solid and stable core domain model, APIs and resources at a time when ordinarily, huge swathes of technical debt is absorbed by the systems.

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Scaleup Startup

A “Scaleup Startup” can unlock new Platform-enabled capabilities to support the immense organisational growth and complexity in the product development process, creating faster and safer environments to develop independently with clear ownership and domain boundaries.

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Community Sponsors

We're opening up for Extensibility Community Sponsors. Interested?

Would you like to support the E11Y  community and reach a growing audience of makers, creators, designers, artists, devs, coders and hackers that want to make your platform richer and more valuable for customers? Then perhaps consider our Community Sponsorship Options (coming soon)

Join the E11Y community

The E11Y community is a movement towards designing products that enable platforms and ecosystems as a first class citizen and enables product, design and engineering teams to ship products faster and more safely.

VISIT THE FORUM