Android is all about your intentions

Fun thing with android are intents. These can be triggered by urls from a simple html link. Learned this through doing some tasker automation. Tasker is a much richer set of features and a bit of an engineers ui.
For most tasker is probably overkill.

A few examples

Here are some examples of making intents using browser links.

Cisco AnyConnect

Cisco Docs

Launch AnyConnect

More complicated example


Launching Intents From Chrom