Packs ECMAScript/CommonJs/AMD modules for the browser. Allows you to split your codebase into multiple bundles, which can be loaded on demand. Supports loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.
Algorand provider is an interface that bridges the gap between dApps and wallets, allowing dApps to connect, and interact, with wallets in a standardized way.