What is Automation? The Complete Guide to Understanding Workflows, APIs, and Marketing Automation

What is Automation? The Complete Guide to Understanding Workflows, APIs, and Marketing Automation

27 July 2026

Businesses still spend a significant amount of their time on repetitive tasks: copying information from one software to another, sending emails, posting on social media, updating a CRM, or generating reports.

These operations are often essential, but they consume time that could be dedicated to higher-value activities.

This is precisely what automation aims to solve.

Thanks to modern technologies, it is now possible to enable multiple applications to communicate with each other to automatically execute hundreds of actions without human intervention. The goal is simple: to save time, reduce errors, and make processes more efficient.

What is Automation?

Automation involves delegating tasks that were previously performed manually to software.

These tasks can be very simple, such as sending a confirmation email after a contact form submission, or much more complex, such as synchronising multiple applications, automatically qualifying leads, or publishing content across several social media platforms.

Automation is based on a simple principle: when an event occurs, one or more actions are executed automatically according to predefined rules.

Why Automate Your Processes?

All businesses perform repetitive operations daily.

For example:

• registering a new customer in a CRM;
• sending an invoice;
• creating a task in project management software;
• publishing news on multiple social media platforms;
• notifying a team on a collaborative messaging platform;
• synchronising contacts between multiple tools.

Automating these operations can significantly reduce the time spent on administrative tasks while limiting the risks of human error.

This allows teams to focus on their core business rather than on repetitive operations.

What is an Automated Workflow?

A workflow is a sequence of steps executed in a specific order.

When automated, this process runs without human intervention as soon as an event triggers the scenario.

Let's take a simple example.

A visitor fills out a quote request form.

Within seconds, the system can automatically:

• create a lead in the CRM;
• send a confirmation email;
• assign the lead to a sales representative;
• create a follow-up task;
• notify the sales team;
• record a conversion in Google Analytics 4.

All these operations can be carried out in a matter of seconds without any human intervention.

REST APIs: The Language of Applications

For automation to work, software must be able to communicate with each other.

This communication often relies on a REST API (Application Programming Interface).

An API allows one application to request or send information to another securely.

For example, an e-commerce platform can request a carrier to create a shipping label or automatically retrieve information about an online payment.

Today, most modern services offer a REST API to facilitate their integration with other tools.

The JSON Format

When two applications exchange information, they use a common format.

The most widely used is JSON (JavaScript Object Notation).

It allows data to be represented in a simple and structured form.

For example, a customer's information can be transmitted in the form of their name, email address, phone number, or company.

Thanks to its simplicity, JSON has become the standard format for modern APIs.

OAuth and OAuth 2.0

For an application to access another service, it must obtain permission.

This is precisely the role of OAuth.

Instead of directly transmitting their password to a third-party application, the user grants limited permission through a secure token system (tokens).

The most widely used version today is OAuth 2.0, adopted by most major services such as Google, Microsoft, Meta, LinkedIn, or GitHub.

This mechanism enhances security while simplifying the connection between different applications.

Webhooks

An automation can be triggered in several ways.

One of the most effective relies on webhooks.

A webhook allows one application to immediately notify another application when an event occurs.

For example:

• a order is validated;
• a payment is accepted;
• a form is submitted;
• a new customer is created.

Instead of constantly checking for changes, the concerned application sends a notification directly at the moment the event occurs.

Webhooks make automations much faster and more resource-efficient.

Automation Platforms

Creating complex automations used to require specific development.

Today, several platforms allow you to visually build workflows.

Among the most well-known are n8n, Make, and Zapier.

n8n

n8n is an open-source automation platform particularly appreciated by developers and businesses wishing to maintain complete control over their data.

It allows for the creation of advanced workflows, integration of custom APIs, and deployment of automations on their own infrastructure.

Its great flexibility makes it suitable for complex scenarios.

Make

Make offers an intuitive graphical interface that simplifies the creation of automation scenarios.

Its numerous connectors and visual representation of workflows make it a popular solution among marketing teams and SMEs.

Zapier

Zapier is one of the historical platforms in the market.

Its main strength lies in its vast catalogue of integrations with thousands of applications.

It allows for the rapid implementation of simple automations without the need for advanced technical skills.

The choice between these solutions primarily depends on the company's needs, the level of customisation sought, and technical constraints.

The Automated CRM

Customer Relationship Management systems can also benefit from automation.

When a new lead is detected, several actions can be executed automatically:

• creating the customer record;
• assigning it to a sales representative;
• sending a personalised email;
• scheduling a reminder;
• updating the sales pipeline.

These automations improve team responsiveness while reducing forgetfulness.

Marketing Automation

Marketing Automation involves automating marketing actions throughout the customer journey.

This can include:

• sending a sequence of emails after a sign-up;
• automatically following up on an abandoned cart;
• publishing content according to an editorial calendar;
• segmenting contacts based on their behaviour;
• personalising communications based on user interactions.

This approach allows for a more consistent experience while increasing the effectiveness of campaigns.

The Benefits of Automation

A well-designed automation strategy offers numerous benefits.

It allows, in particular, to:

• save considerable time on repetitive tasks;
• reduce errors related to manual handling;
• improve team responsiveness;
• standardise processes;
• better leverage available data;
• facilitate collaboration between different software;
• support the company's growth without proportionally increasing the workload.

Automation does not replace employees: it allows them to focus on tasks that require expertise, creativity, or decision-making.

How Leadnist Automates Business Marketing

At Leadnist, automation is at the heart of the platform. The goal is not just to connect applications, but to create workflows capable of simplifying the daily operations of businesses.

The platform enables the automation of numerous actions: publishing content on social media, synchronising marketing data, tracking performance, managing leads, triggering actions after an event, or integrating with third-party services via APIs, webhooks, and modern authentication mechanisms like OAuth 2.0.

By centralising these automations in a single interface, Leadnist helps businesses save time, limit errors, and build scalable processes tailored to their activities. Teams can thus dedicate more time to their business development rather than repetitive tasks.

In Conclusion

Automation has become an essential lever for businesses looking to improve their productivity and accelerate their growth. Thanks to REST APIs, webhooks, the JSON format, and protocols like OAuth 2.0, software can now communicate securely with each other to automatically execute hundreds of actions.

Platforms like n8n, Make, or Zapier make this technology accessible to an increasing number of organisations, while automated CRM and Marketing Automation help optimise customer relationships throughout their journey.

By integrating these technologies into a single platform, Leadnist helps businesses design intelligent workflows, connect their tools, and automate their marketing processes to gain efficiency and sustainably support their growth.