The easiest way to do this is with LetвЂ™s Encrypt, an automated certificate authority. If youвЂ™re running your own web server without any third-party services, youвЂ™ll have to manage your own certificates. If you can, let your host manage your certificates for you-it means no hassle at all and every API call will be automatically secured. If you host on AWS, AWS Certificate Manager combined with AWS Cloudfront will take care of you. If you host a website on Heroku, enabling TLS is a matter of clicking a button. Most cloud providers and hosting services will manage your certificates and enable TLS for you.

TLS requires a certificate issued by a certificate authority, which also lets users know that your API is legitimate and protected. YouвЂ™ll know a website has TLS enabled when its URL starts with instead of Without TLS, a third party could intercept and read sensitive information in transit, like API credentials and private data! That undermines any of the authentication measures you put in place. You might know TLS by its predecessorвЂ™s name, SSL. TLS protects the information your API sends (and the information that users send to your API) by encrypting your messages while theyвЂ™re in transit. Always use TLSД®very web API should use TLS (Transport Layer Security). In this article, weвЂ™ll show you our best practices for implementing authorization in REST APIs. This process of defining access policies for your app is called authorization. If anyone could edit the post youвЂ™re reading, then weвЂ™d get vandals, link farmers, and others changing and deleting things willy nilly. Your app will need an access policy-who can view or modify data on your server? For instance, only the author of a blog post should be able to edit it, and readers should only be able to view it. To let the many services that make up your appвЂ™s infrastructure communicate with each other.ДЄny API built for these reasons can be abused by malicious or reckless actors.To give end users, both people and programs, programmatic access to data managed by your application.To give a networked client that you built-for instance, a single-page app in the browser or on a mobile app on a phone-access to data on your server.There are three reasons you might find yourself writing a REST API: ItвЂ™s not a standard or protocol, but rather a set of architectural constraints. REST is a simple and flexible way of structuring a web API. Most apps that use a modern web framework will have one or more REST APIs.

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