Leeco 
Translate this article into English: In product development, address and coordinate conversion are commonly used. Locating a specific address according to coordinates is called reverse geocoding technology. Some of the more mainstream solutions are as follows.
- Google Maps API
Google Maps’ geocoding API provides related interfaces. It used to offer free quotas for individual developers, but since its update in 2018, it has started charging based on the number of API calls.
- Open-source OpenStreetMap
OpenStreetMap is an online collaborative mapping project aimed at creating a freely available and editable world map for everyone, making navigation more accessible for mobile devices. The OSM project was founded by Steve Coast in the United Kingdom, inspired by the Wikipedia website and the monopoly of private map data in the UK and other regions. OSM has over 5 million registered users.
- Amap
Amap only creates regional data for China and does not produce data for other countries. Amap is a more mature map solution, later acquired by Alibaba. It provides reverse geocoding API interfaces, with a monthly quota of 5,000 API calls for individual developers and 300,000 API calls for enterprise developers. If you need to increase the quota, you need to pay for the service.
- Baidu Maps
Baidu Maps provides a global reverse geocoding API interface.
It is recommended that developers use a combination of these solutions in actual products to reduce costs.
