What is an API Integration ?

 

 

 

What is API integration? 

 

API integration refers to the linkage established between two or more applications through their respective APIs, enabling these systems to share data seamlessly. Such integrations are essential for numerous high-performing organizations, as they maintain data consistency, boost productivity, and contribute to revenue generation.

What is an API? 

An API, or "application programming interface," is defined as: 

“A collection of subroutine definitions, protocols, and tools for developing application software. Broadly speaking, it represents a set of well-defined communication methods between different software components.” 

 

But what does this truly entail?

 

Understanding APIs and API integrations 

To grasp the concept of APIs and API integrations, one can draw a parallel with the evolution of international shipping. 

Historically, before World War II, goods were typically transported as "break bulk," meaning they were loaded individually onto cargo ships by teams of dockworkers. 

However, the landscape of freight shipping transformed significantly after World War II with the advent of intermodal freight transport, which introduced standardized shipping methods. As long as a company's products conformed to a specified container size and weight limit, they could be shipped globally. 

Similarly, APIs function as transport mechanisms for software. Just as freight is carried in reusable steel containers, APIs for web services encompass all interactions—requests sent to and responses received from an application. The use of APIs has surged dramatically, with over 24,000 currently operational in various environments.

 

What advantages does API integration offer? 

Almost every application utilizes API integration to some degree, and its advantages encompass: 


Effortless data exchange 

Each API possesses unique characteristics and employs various combinations of architectures, protocols, programming languages, authentication methods, data formats, and storage techniques. Nevertheless, for APIs to provide their full potential, they must be capable of interworking. API integration addresses these implementation variances in a systematic manner, enabling data to flow seamlessly between APIs without the need for human intervention. 

Enhanced operational efficiency 

API integration is frequently employed to automate labor-intensive tasks and optimize essential business workflows. It also facilitates the consolidation of data from diverse sources, simplifying the analysis process. Collectively, these advantages contribute to time and cost savings while boosting productivity and minimizing the likelihood of human errors. 

Improved user experiences 

Organizations can incorporate third-party APIs into their applications to augment functionality without the necessity of building from the ground up. For example, the development team of an e-commerce platform may integrate a payment processing API, such as Stripe or Square. By utilizing public APIs from other entities, teams can innovate swiftly and confidently, striving to provide the most favorable user experience. 

 

API integration operates through various methods, necessitating that developers assess their requirements and options prior to formulating and implementing a strategy. A widely adopted method involves utilizing a library or software development kit (SDK) associated with the desired API. SDKs offer pre-written, reusable code segments for tasks such as authentication, request management, and response interpretation, thereby streamlining the integration process.

 

Alternatively, developers may opt to create custom code for integration purposes. While this method provides greater flexibility, it tends to be more labor-intensive and susceptible to errors.

 

For instance, consider a scenario where you wish to gather contacts via a WordPress-based website. You could design a form within WordPress that transmits the collected data through an API call to HubSpot, thereby generating a new contact in your customer relationship management (CRM) system. If you utilize an external email automation service, such as Mailchimp, to distribute newsletters to these contacts, Mailchimp can leverage the HubSpot API to access the contact list for email distribution.

 

In many instances, pre-existing integrations are available to facilitate various integration tasks. However, these solutions often have limitations regarding their capabilities. When faced with such constraints, it may be necessary to employ an intermediary tool to manage the communication between the two systems. This tool would be responsible for retrieving data from WordPress and forwarding it to HubSpot, or conversely, extracting data from HubSpot to relay to Mailchimp. Additionally, if you wish to update contact records in HubSpot to reflect whether specific emails have been dispatched, an integration must be established to gather information on the recipients of emails sent via Mailchimp and subsequently relay that data back to HubSpot.

 

To accomplish this, it is essential to have a mechanism for executing these API calls. Setting up such a system independently can be expensive, as it involves not only the execution of API calls but also the maintenance of the infrastructure, ensuring its security, and scaling it in accordance with evolving needs.

API Integration Tools 

APIs consist of a collection of protocols and standards that facilitate communication between various software applications. 

• MuleSoft 

• Boomi 

• Zapier 

• Postman 

• Cloud Support 

• Workato 

• Clea 

• Astero 

• Microsoft Azure 

• Informatica 

• Apigee 

• DreamFactory 

 

Types of Web APIs 

APIs are widely utilized in web applications, and there are four primary categories of APIs commonly employed in web services: public, partner, private, and composite. In this context, the "type" of API refers to its intended scope of use.

Public APIs

Public APIs are accessible to any external developer or business, allowing for open utilization. Organizations that adopt a business model focused on sharing their applications and data with other entities will create and provide a public API, which is also referred to as an open API or external API.

Partner APIs. 

Partner APIs, in contrast, are restricted to a select group of authorized external developers or API consumers, serving to enhance business-to-business interactions. For instance, if a company wishes to share its customer data selectively with external CRM providers, a partner API can facilitate the connection between the internal customer data system and those external entities, prohibiting any other API usage.

 

Partners are granted specific rights and licenses to access these APIs, which is why partner APIs typically feature enhanced authentication, authorization, and security protocols. Additionally, enterprises usually do not generate direct revenue from these APIs; instead, partners receive compensation for their services rather than through API usage.

Internal APIs.

Internal APIs, also known as private APIs, are designed solely for internal use within an organization, enabling the integration of systems and data within the company. For example, an internal API may link an organization’s payroll and human resources systems.

Composite APIs. 

Composite APIs are designed to merge two or more APIs to create a series of related or interdependent operations. These APIs can be advantageous for managing complex or closely related API functions and may enhance speed and performance compared to using individual APIs.

 

Final considerations 

The integration of APIs represents a crucial component of contemporary software development, ensuring that applications can operate cohesively within a larger ecosystem. 

However, the implementation of API integrations is inherently intricate and extensive. This complexity is particularly pronounced in the realm of product integrations, as clients and potential customers will expect you to create and sustain an increasing array of integrations between their applications and your product. 

To assist your developers in circumventing many of the steps discussed in this article while still delivering the necessary integrations for your prospects and clients, consider utilizing Merge, the premier unified API solution. By developing to Merge’s Unified API, you can begin to provide numerous, or even hundreds, of product integrations across essential software categories, including CRM, HRIS, ATS, and file storage.

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