The Alexa Skills Kit is a software development kit (SDK) that enables a developer to build skills, also called conversational applications, on the Amazon Alexa artificial intelligence assistant.
Alexa skills are like apps. You can enable and disable skills, using the Alexa app or a web browser, in the same way that you install and uninstall apps on your smart phone or tablet. Skills are voice-driven Alexa capabilities. You can add Alexa skills to your Echo to bring products and services to life. You can view available skills and enable or disable them using your Alexa app.
Alexa can help you with music playback, making to-do lists, setting alarms, streaming podcasts, playing audiobooks, as well as providing weather, traffic and other real-time information.