When you enter an address on Google Maps, it instantly identifies where on Earth that address is located. This process of converting addresses to coordinates is known as geocoding and it’s a pretty cool software engineering achievement. A geocoding API allows developers to integrate the same functionality into their applications, and there are plenty of freemium options available. USPS Address Validation APIAn address validation API (or verification API) compares the entered address against a database of accepted addresses to identify any errors. It then corrects the address to ensure it matches accepted standards, and can also standardize it by splitting it into individual elements like street, number, zip code, city, state and country. This helps prevent data errors and enables businesses to dispatch products or send marketing emails to customers in the right location. Positionstack is one of the most popular free geocoding APIs available, and it can return latitude and longitude coordinates for a given address in a matter of seconds. Its geocoding service can detect common errors like misspellings and incomplete addresses, and it supports different formats of input, including free-form text. Other freemium geocoding APIs include TrueWay Matrix, which calculates driving distances based on live or predictive traffic data, and Yaddress, which can geocode an address and standardize it to separate the different parts of the address into their own fields. The latter is particularly useful for enabling businesses to send out targeted campaigns and offer discounts to specific demographics.
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