APIs let your product or service communicate with other products and services without having to know how they’re implemented.
For example, when you use a 'Login with Google' button or display a Google Map on your site, you are using an API.
The world runs on APIs. It is the digital glue of the economy. When you book an Uber (Maps API + Payment API + Twilio SMS API), you are using 5 different services at once.
For businesses, APIs mean you don't have to reinvent the wheel. You don't build a mapping system; you rent Google's.
It's only for developers.
Reality:True, developers write them. But business leaders need to understand the 'API Economy' to build partnerships and integrations.
APIs are insecure.
Reality:Public APIs are secured with keys and tokens. You only give access to exactly the data you want to share.
Payment Gateways: Stripe API lets any website accept credit cards without becoming a bank.
Weather Apps: They don't have satellites. They just call the Weather Channel API to get the temperature for your zip code.
REST is like ordering from a menu (you get the whole dish). GraphQL is like a buffet (you take exactly the shrimp and broccoli you want). GraphQL is newer and more efficient.
It's like a password for a machine. It tracks who is using the API and allows the owner to bill them or block them.
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