Having previously successfully defended low-code on all three charges of inflexibilitylock-in, and security, today we find low-code back in the dock—in the “Scalability vs. Low-Code” case. Read on to see if “Low-Code” walks free, or ends up “in the slammer.” (The links above will take you to earlier posts in this five-part series.)

The Reasons for Not Using or Considering Low-Code

In our State of Application Development 2018 report, 13 percent of responders who were not currently using or planning to use low-code blamed concern about scalability as a reason for holding back.

Reasons for not Using Low-Code

Why Some IT Pros Distrust Low-Code’s Scalability

I should perhaps clarify my position for the defense. The truth is, I’m not going to be able to get all low-code vendors off the hook on this one. However, I can mount a spirited defense for OutSystems and let other vendors make their representations if and when they get their day in court.

An air of suspicion hangs over the head of low-code-scalability because many low-code vendors promise to empower citizen developers. The perception, therefore, follows that low-code will be used for small, non-business-critical applications, confined to user departments.

If that were the case, scalability would not need to be a top priority, either for vendors or purchasers of such tools. So, it’s entirely logical for IT pros to be skeptical that low-code might struggle if applied to more taxing, highly scaled deployments.

Low-Code Spreads Its Wings

However, our research findings indicate that the notion that low-code is used just for small, internal departmental apps is significantly out-of-date. We asked users of low-code what kinds of projects they were delivering with low-code. The answers were as follows:

Projects using low-code
Projects using low-code

Adding customer/partner facing portals and web apps (50%) to mobile apps that serve the same users (32%) clearly emphasizes that low-code is pulling its weight when it comes to serving customers and business partners.

"50% of low-code users are serving customers or partners with web applications, and 32% are serving them with mobile apps."

These kinds of use case place scalability, as well as security, front-and-center of selection criteria, for anyone evaluating low-code.

Two Perspectives of Scale

There are two scalability perspectives that evaluators might have in mind as they kick the tires on low-code:

  • Runtime Scalability. The ability to increase the capacity of deployed low-code applications and to provide fast user experiences, both for large numbers of users and compute-intensive operations.
  • Dev-Time Scalability. The ability to use low-code for multiple use-cases, projects, and developers and to deliver long-term, successful management of large, interconnected portfolios of applications.

Members of the jury, you might have been expecting a treatise on vertical and horizontal scaling, but as we’ll soon reveal, the above framework supports a more thorough exploration of how to make low-code scale.

Runtime Scalability

Runtime is much the simpler of the two scalability measures and the one commonly considered by industry analysts.

Forrester’s perspective

Forrester’s bifurcation of the low-code market has implications for those who want scale.

Forrester – Vendor Landscape: A Fork In The Road For Low-Code Development Platforms

Low-Code Platforms for AD&D

Low-code platforms for AD&D target pro development groups with rich tooling and promises of high scale.”

Low-code Platforms for Business Developers

Low-code platforms for business developers target nontraditional developers with simple tooling and more modest scale.”

This isn’t to say low-code platforms aimed at business users won’t scale, but evaluators should bear in mind that in its evaluation and ranking of these vendors, Forrester will not have placed much emphasis on scalability, favoring instead features like “no-code” simplicity for business developers.

On the other hand, vendors that score highly in Forrester’s Wave™ report on Low-Code Development Platforms For AD&D Pros will have scored highly for scalability, according to Forrester’s analysis.

Thoughts from Intellyx

Industry analyst Jason Bloomberg of Intellyx provides a more technical bisection of low-code vendors in his article Low-Code/No-Code? hpaPaaS? Here's What Everybody Is Missing. The main thrust of the article compares two different execution approaches used by low-code platforms.

  • Code-generation platforms. These low-code platforms output executable code that can be installed on a variety of standard infrastructures. OutSystems is one such platform.
  • Model-driven execution platforms. These low-code platforms host the application in such a way that the platform interprets and executes the model at run-time.

Jason suggests:

“Depending on the specifics of the platform, code generation may also create higher performance applications than the model-driven execution platform alternative, as they may compile down into executable bytecode that runs more quickly than the alternative’s interpreted approach.”

It’s not just the presence of a so-called interpreter that is likely to slow down apps running on a model-driven execution style platform. There’s likely to be overhead for loading even the simplest of screens, as the current configuration of screen layout and controls needs to be read from a database rather than compiled code.

Further thoughts on how runtime interpretation poses a risk of vendor lock-in were included in my previous article Low-Code Myths, Fears, and Realities #2. Vendor Lock-in.

OutSystems: Runtime Scalability You Can Trust

Firmly positioned as a leading low-code platform for large AD&D teams, enterprise-grade scalability is front of mind for OutSystems—so much so that we provide an “Enterprise-Grade-Everything” web page from which you can navigate deep into the technical weeds of horizontal and vertical scaling plus all things needed to scale web and mobile apps to millions of users.

However, for those averse to clicking-away (as you are no-doubt riveted to see how this case unfolds), here are the edited highlights.

Enterprise-grade = Peace of mind

OutSystems enables full-stack visual development and then translates application models into standard and optimized applications that are ready to run on a standard web farm or cloud architecture.

Once generated, applications can run independently of any OutSystems components. This means:

  • You can deploy the applications you create to any of the following: OutSystems cloud, AWS, Azure, and Pivotal PAS; or, if you prefer, you can deploy into a multi-cloud, hybrid, or on-premises infrastructure.
  • You can scale from a pilot project to an Internet-wide deployment that supports millions of users. When it comes to scalability, with OutSystems, the only limit is your imagination.

Get the Full low-down on OutSystems Scalability

Ready for a deep-dive on OutSystems scalability? Continue learning with these resources:

How Scalable is a Low-Code Platform

How Scalable is a Low-Code Platform?

Imagine a mobile banking app on Black Friday. That’s about 20 million users with thousands of concurrent accesses. This is what we pitted against our OutSystems mobile back-end—the server side of OutSystems.

Read the Massively Scaling Mobile Apps white paper and get the full story.

Scalable Architecture

With OutSystems you can meet even the most massive of customer requirements with vertical and horizontal scalability and support for containers and microservices built-in.

  • Learn why horizontal scaling is a breeze with additional front-end servers, network zones, and more.
  • Learn why vertical scaling provides you the computing power you need whether on-premises or cloud.

Dev-Time Scalability

Now we turn our attention to the other dimension of low-code scaling. The ability to use low-code for multiple use cases, projects, and developers and to deliver long-term, successful management of large, interconnected portfolios of applications.

What would such scale look like if low-code development really took-off in your business and became the standard way of working?

  • There would be multiple developer teams working on different applications in parallel.
  • Those applications would span multiple use cases including digital operationsdigital experiences, and core systems.
  • The broader scope of digital core projects would require the coordination of larger development teams, with more moving parts and greater cross-portfolio dependencies.
  • As the portfolio of low-code-delivered applications matured, performance monitoring and continual improvement of those apps would become increasingly important.
  • Perhaps most importantly, despite the rising scale and associated complexity, your AD&D team needs the continued productivity advantage that they’ve come to expect from low-code.

OutSystems Customers Prove Low-Code Scalability

By visiting OutSystems case studies pages on the website, you can find many customers who have successfully scaled their use of low-code to scores of applications, dozens of developers, and multi-year, continuous delivery and update of those systems. Here are just two examples:

  • Leading Insurer Liberty Seguros has been using OutSystems since 2004, has over 29 developers, and has delivered 83 applications. They’ve been able to retire multiple expensive and inflexible COTS (aka commercial off the shelf) applications, made multi-million license and maintenance savings, and claim a four-to-five times delivery speed advantage.
  • Vopak, the world’s leading bulk liquid storage company, rewrote its entire ERP system—a project originally slated for three years completed in just 16 months. They now enjoy massively improved agility, having escaped an ERP system that was a sinkhole for consulting spend in the past.

Despite the success that many customers have had with scaling their adoption of low-code, that’s not to pretend there haven’t been challenges along the way. Having a large number of such customers is a constant source of inspiration for our product management team, who have been hard at work to ensure every customer can more easily scale their use of low-code to ever more ambitious projects and portfolios.

The result of this investment is OutSystems 11.

OutSystems 11 Raises the bar for Low-Code Scalability

The design goal of OutSystems 11 is to help organizations modernize legacy systems and replace large application portfolios. With multiple customers delivering web and mobile applications up to 10 times faster, the obvious next step was to provide that efficiency and agility advantage to whatever the size of applications to be developed or the scope of the overall app portfolio.

IT leaders shouldn’t have to tradeoff control against speed and simplicity. Six new capabilities in OutSystems 11 make this a reality.

Architectural Agility at Scale

Architectural Agility at Scale

OutSystems 11 provides in-depth impact analysis of entire systems before their release, providing the advance warning needed to ensure builds don’t break.

This saves AD&D teams hours of validating and fixing cross-architecture impacts on complex sets of apps or large systems.

You can effectively implement a full-fledged microservices architecture. Teams are more agile, safely creating and changing reusable services and applications fast and at scale.

Monitoring and Troubleshooting at Scale

Monitoring and troubleshooting at scale

OutSystems 11 has embedded monitoring, out-of-the-box analytics, and built-in dashboards that highlight app performance concerns or breakdowns.

AD&D teams can identify choke points, or services that are down before they impact the health of the entire portfolio (SaaS and external legacy systems included).

Governance at Scale

Governance at Scale

OutSystems 11 allows AD&D leaders to control who in their teams can create and manage services and who can consume them, using a full entitlement model that extends to all apps and services.

This means AD&D leaders can structure parallel development teams based on delivery streams for each business area. Multiple continuous delivery pipelines work independently, while still modularizing and reusing services.

Operations at Scale

Operations at Scale

OutSystems 11 can deploy apps and services to leading container-as-a-service and platform-as-a-service providers, including Amazon ECS, Azure Container Service, Pivot PAS, and on-premises Docker container environments.

This means AD&D teams can take advantage of streamlined, lean operations, faster deployment, increased scalability, resilience, and portability.

Modern User Experiences at Scale

Modern User Experiences at Scale

A new UI framework makes it easy for developers to access screen templates and patterns directly from the OutSystems visual editor and customize, extend, and reuse them as needed.

These templates—derived from analyzing leading business apps—make it easier for large and distributed development teams to deliver apps with a consistent, modern look-and-feel, without waiting on constrained design and CSS expertise.

Security Without Borders

Security Without Borders

OutSystems 11 provides automated risk assessments, granular access controls, and activity monitoring. The result: less effort and due-diligence required for multi-experience development, without impacting security or compliance.

The OutSystems 11 launch comes on the heels of the KKR and Goldman Sachs $360 million investment in OutSystems in June 2018 and delivers on the “Here’s how we’re putting that to work” vision, painted by OutSystems CEO Paulo Rosado at the time.

Another of the innovations outlined in Paulo’s article is the harnessing of AI to further improve and accelerate application development. Our research and development are progressing at pace, and OutSystems users can already sign-up for early access to use an AI “co-pilot” that saves experienced developers 25 percent more time when creating or editing OutSystems apps.

The same capability helps new developers learn how to use the OutSystems IDE even more quickly. You can sign up for regular updates on our AI developments, and find out about the early access program here.

Organizing and Scaling Your Low-Code Delivery Team

Several of the capabilities described above have hinted at the ways you will need to organize your low-code delivery team for scalable success. Read our “Digital Transformation Playbook” for more details on how to scale your use of low-code with a “low-code digital factory,” including guidance on the team structure, talent, ecosystem, and processes needed for long-term success and enterprise-wide adoption.

The “Scalability vs. Low-Code” Case: The Verdict?

Hopefully, the framework and arguments set out in this article will have provided you with a solid basis for considering the scalability credentials of low-code platforms.

Whichever low-code platform is brought to trial, you—the jury—must ultimately decide the verdict. But, in the case “Scalability vs. OutSystems,” I move for case dismissed.

More Reading on Low-Code Myths

Myth # 1 – We cannot build what we need. Read What Can You Build With Low-Code?

Myth # 2 – The Fear of Vendor Lock-in

Myth # 3 – The Fear of Low-Code Insecurity

Myth # 5 – Low-Code will be bad for my career.


Want to know more about the myths and realities of low-code? Check out our webinar.