API Administration Finest Practices | Toptal®


As extra data is shared throughout methods, utility programming interfaces (APIs) have change into strategically important for organizations of every kind and sizes. The variety of public APIs accessible elevated from fewer than 400 in 2006 to greater than 20,000 in 2019, in keeping with a 2021 Deloitte report. A 2022 report by Speedy discovered that 75% of builders make the most of inner APIs and almost 54% work with third-party APIs. The report additionally discovered that the variety of APIs a corporation maintains grows with the scale of the group: 32% of firms with 201 to 1,000 staff use between 11 and 50 APIs, whereas virtually 38% of firms with greater than 10,000 staff use greater than 250.

Managing even a single API is a fancy job, involving a number of stakeholders from many know-how and enterprise capabilities. If issues go mistaken, the losses may be important. Because of this it’s necessary to have a strategic and holistic method to managing APIs. A technique of reaching that is to deal with the API as a product, an idea often known as AaaP. That will help you navigate the API panorama, I’ve gathered these high API administration finest practices from my decade working as a digital product specialist.

API Sorts: An Overview

Merely put, an API is a algorithm and protocols that permits completely different methods to speak and share information and capabilities. APIs are utilized by completely different methods and purposes, so the tip clients are builders, architects, product managers, and different professionals managing these methods and purposes. There are lots of varieties of APIs and a number of methods to arrange them. When creating and managing an API, take into account the class (or classes) it falls into. Listed here are three of the commonest.

1. Entry: Inner, Associate, and Public

Because the identify suggests, inner APIs are used inside a corporation and are usually not accessible to any outdoors methods. They’re extra widespread in bigger organizations, the place they’re used to spice up productiveness, share capabilities, and enhance processes. These large-scale APIs are essentially the most difficult to work on, however additionally they provide thrilling prospects for companies and merchandise.

Associate APIs can be found to pick events that should register in an effort to use them. They’re an effective way for firms to share sure information or capabilities whereas retaining entry management, setting necessities to be used, and reserving the flexibility to revoke permissions at any time. One of the well-known examples is the Amazon Promoting Associate API—a mature, profitable API utilized by hundreds of distributors that provides a catalog of processing functionalities for orders, funds, transport, and reporting.

Public APIs are open to everybody, though they often require registration to acquire the API keys. These APIs can stimulate innovation and construct ecosystems, and are sometimes seen as a public good, providing simply accessible infrastructure. An instance is the NASA API portal, which supplies public entry to information akin to moon, Earth, and Mars imagery and the Close to-Earth Object Internet Service. IMDb, Yahoo Finance, Shazam, and Google Maps all have public APIs too.

2. Goal Consumer Group

These APIs are labeled by the business entities they assist: business-to-business (B2B), business-to-business-to-consumer (B2B2C), government-to-business (G2B), government-to-business-to-consumer (G2B2C), government-to-consumer (G2C), and lots of extra. The Amazon Promoting Associate API would fall underneath the B2B2C group, as it’s utilized by companies with customers as finish customers. The NASA APIs are G2B or G2C, as they’re supplied by a US authorities company.

3. Know-how

As APIs alternate information and instructions, they require clear architectures and protocols. There are various kinds of APIs based mostly on the know-how used to construct the API, akin to REST (representational state switch), RPC (distant process name), and SOAP (easy object entry protocol).

REST, generally often known as RESTful, is essentially the most broadly employed architectural fashion for designing networked purposes. It’s based mostly on a set of ideas that promote scalability, simplicity, and interoperability. REST APIs are primarily used for constructing net companies and are language-agnostic, enabling completely different shoppers to work together with the identical API. They supply a versatile method to constructing distributed methods, utilizing distinctive uniform useful resource identifiers and offering entry by customary HTTP strategies akin to GET, POST, PUT, PATCH, and DELETE.

Managing APIs As Merchandise

There isn’t a single strategy to divide or listing the important thing elements of managing an API as lots of them intertwine or overlap, however right here I break down the varied parts that will help you apply a product improvement method to managing APIs.

API Product Technique

Product technique for APIs is just like digital product technique. It’s two-sided, overlaying each the “why” and the “how.” The why is the necessity or drawback you might be fixing—the last word purpose for the API. The how is targeted on the technical execution—the way you’ll clear up the issue.

As with all product, it’s necessary for the API product technique to be aligned along with your group’s total technique and enterprise mannequin. With a health app, for instance, a strategic purpose can be to extend each the variety of customers and person retention charges. One of many methods to assist this might be to hook up with a person’s well being information in order that their expertise turns into seamless. To do that, you may use Apple HealthKit and Android Well being Join.

For some firms, the API is the core of the enterprise. Take the instance of Stripe, a cost companies supplier that lets retailers settle for debit playing cards, bank cards, and different funds. On this occasion, firm technique is the de facto API technique, and success or failure of the API is instantly associated to the enterprise total.

Different organizations could have a enterprise mannequin that the API will instantly assist. A very good instance can be a conventional financial institution providing a associate API to assist open banking initiatives. Open banking permits customers and SMBs to share their financial institution and bank card transaction information securely with trusted third events that present them with purposes, options, and companies to save lots of money and time.

Whether or not the API is the core of the enterprise, as with Stripe, or a supporting pillar, akin to open banking enablement, technique alignment is essential.

API Design and Developer Expertise

Design is the method of deciding how one thing will work, look, and be used. Constructing an API requires making selections in regards to the interface, which may have implications for person interplay, security, and different elements. A very good design helps the technique, enhancing ease of integration, safety, and scalability in an effort to purchase extra customers.

On the subject of designing APIs, person expertise (UX) is known as developer expertise (DX). The common developer may have sure expectations and necessities for an API, together with simplicity and ease of use, clear and complete documentation, consistency, error-handling and debugging assist, and dependable efficiency. These ought to all inform the API design.

A great way to enhance DX is by establishing a developer portal the place all of the sources for an API are available and neatly organized. Examples of such portals embody PayPal Developer, Spotify for Builders, Stripe Developer instruments, and Twilio Docs. Moreover, builders worth group and assist, so options akin to a community-driven roadmap, developer advocates, suggestions channels, and boards may be helpful.

API Robustness and Safety

Robustness and safety are typically a part of API design and are equally necessary. Robustness refers back to the capability of an API to deal with surprising conditions and errors—guaranteeing an API can stand up to excessive volumes of requests, get better from failures, and deal with varied information codecs. If an API isn’t sturdy, it might change into unresponsive underneath a heavy load, leading to downtime or degraded efficiency for purposes counting on it. This may have extreme penalties for each the applying (lack of customers) and the API supplier (service-level settlement breach and ensuing damages).

Safety is about defending the API and the information it processes from breaches, unauthorized entry, and malicious assaults. If an API isn’t safe, the results may be just like these above, with the extra danger of steep fines for information breaches.

API Growth, Testing, and Deployment

Growth, testing, and deployment are essential steps in making an API accessible to customers and guaranteeing its high quality, performance, and profitable integration. Through the improvement section, the group designs and implements the API by creating the required endpoints, defining information buildings, establishing anticipated conduct, and so forth. Testing is required to validate efficiency and compatibility. Unit, integration, and end-to-end exams (amongst others) are performed to guage the API’s conduct in real-world situations.

As soon as improvement and testing are completed, the API is deployed to a manufacturing atmosphere. This includes configuration and guaranteeing that the correct infrastructure and safety measures are in place. Steady integration and deployment practices are sometimes used to streamline this course of.

API Discovery, Analysis, and Integration

On the patron aspect, discovery, analysis, and integration are the principle steps in connecting to and using an API. Simply as you’ll as a product supervisor, as an API product supervisor, it is best to stroll in your buyer’s sneakers, contemplating these completely different levels, and serious about how one can meet buyer wants in the very best means. How can clients uncover your API? How can they study extra and take part in evaluating it? How is the combination course of designed? These concerns tie into DX, design, and technique.

API Governance and Steady Growth

API governance refers back to the set of processes, insurance policies, and controls carried out to make sure efficient administration, utilization, and compliance. An API is a reside, constantly evolving system, which implies it’s by no means absolutely completed. As new clients use the API, completely different use instances could come up, and new options can be added. To watch and handle this, good governance is significant. Of their e book Steady API Administration, authors Mehdi Medjaoui et al., describe three examples along with real-life use instances of governance patterns:

  • Design authority: PayPal’s central design group validates all new API designs.
  • Embedded centralized specialists: HSBC has a community of API champions to assist native challenge groups.
  • Influenced self-governance: Spotify applies an method known as Golden Path, offering a catalog of really helpful instruments and companies to engineering groups which were endorsed by the design authority.

API Metrics

Metrics are important for managing and measuring the success of an API, as they supply insights into efficiency, utilization, and well being. The primary success elements for an API mirror what issues to the tip clients. In her e book API Analytics for Product Managers, Deepa Goyal, product technique lead at Postman and former head of API expertise at PayPal, divides API metrics into three classes:

  1. Infrastructure metrics, which cowl product efficiency, utilization, and reliability
  2. Enterprise metrics, which cowl income, adoption, and operations
  3. Product metrics, which span a number of completely different levels, together with discovery, engagement, acquisition, activation, retention, and expertise

Goyal additionally supplies examples of those metrics, as proven within the desk under:

API Metrics



  • Uptime and downtime
  • Common and max latency
  • Errors per minute


  • CPU and reminiscence utilization
  • Requests per minute
  • Most-used endpoints
  • Concurrent connections


  • Imply time to failure
  • Imply time to restore
  • Charge of failure incidence



  • Month-to-month recurring income
  • Common income per account
  • Income by acquisition channel



  • Price of infrastructure
  • Incidents per thirty days
  • Price of outages



  • Distinctive guests
  • Web page views
  • Signal-ups


  • Common time on web page
  • Bounce charge
  • Engagement with instruments


  • Each day person sign-ups
  • Time to first Hiya, World
  • Software program improvement equipment and model adoption


  • Time to first transaction
  • Lively customers
  • Cohort evaluation


  • Recurring utilization
  • Buyer retention
  • API calls per enterprise transaction


  • Distinctive API clients
  • Prime clients by API utilization
  • Conversion charge
  • Web Promoter Rating
  • Each day assist tickets per energetic person

This is only one strategy to categorize API metrics; the way you select to trace and make the most of metrics will rely upon your enterprise context. There’s a giant distinction between business APIs akin to Stripe, the place excessive significance can be given to issues like adoption metrics, market share, and earnings per person, and inner APIs, the place the purpose is to not conquer a market however to share capabilities or enhance processes.

Consider the API As a Product

As APIs change into more and more prevalent and necessary to enterprise operations, you have to implement a powerful API administration answer. Managing an API as a product means at all times preserving the tip person in thoughts and guaranteeing alignment with organizational targets. It means serious about DX, governance, robustness, safety, testing, and deployment. It additionally means measuring API success utilizing related metrics.

Should you haven’t but created an API in your group, deal with the framework above as a blueprint for improvement and implementation. If you have already got an API, or a number of APIs, think about using these finest practices to strengthen and enhance high quality and efficiency. When you could not have beforehand considered an API as a product, adopting this angle may give you higher management and improved insights, permitting you to make the most of product administration experience so that every API higher serves your enterprise.


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