Google announced its decision to end the support for its famous Project Tango on March 2018. Their alternative is ARCore, a new SDK that does not need additional hardware, thus making the AR adoption easier. Since Google Tango required for extra sensors to be added to the devices, in order to function, the hardware producers were reluctant, therefore the company reoriented its efforts towards a different technology. ARCore’s tagline is “Transform the future of work and play at Android scale”.
You may explore ARCore in detail here, by browsing the supported development environments, as well as the resources Google made available in the presentation of their product. The purpose of ARCore is similar to Project Tango, respectively it provides a multidimensional sense of the surrounding environment, through a motion tracking system that makes use of the smartphone camera. By mapping out the space in a tridimensional way, this technology serves in advanced AR projects (or at least this is what the company promises).
ARCore’s competitor is Apple’s ARKit, a platform ready for roll-out simultaneously with iOS 11.