The Geocoding API lets you use a map to find a certain place. It can return the full address, co-ordinates, and travel distance between two points. For each input address, you can choose to return only the exact location or the approximate location. By default, the Geocoding API returns Washington, DC for a query such as "wahsington".
The first step in world-class geocoding is address validation. To ensure that the geocode you've received is correct, you should check the mailing address against an authoritative database. If the address is not valid, you should serve it with an "invalid" response. This gives you a chance to fix the address. Otherwise, you'll end up with no results. Alternatively, you could use a locally hosted geocoding solution that doesn't require an internet connection.
You can also specify limits when using the Geocoding API. The default limit is one request per second. However, you can limit your Geocoding API requests to a maximum of 30 days per day. You can also limit the number of requests to a single location or a certain number of different locations per day. If you're using the Geocoding API for web applications, you can set the number of requests per day to limit the amount of data you're able to retrieve at any one time. You can also restrict the number of API calls.
The location can be a street address, postcode, landmark, or latitude/longitude point. Geocoding APIs can also accept a partial address. For a street address, you can input the street address, but it's usually better to specify the latitude and longitude points. In addition, if you want to use the geocoding API for web applications, you can specify the lat/long coordinates. You can also specify the location of a specific place by supplying the postcode.
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