import { LinkCard, LinkCardContainer } from @site/src/components/HomepageFeatures/LinkCards; import Subtitle from @site/src/components/typography/Subtitle; import UseCase from ./_usecases/_useCases.mdx; # Voice Build next-generation calling applications with integrated AI, plug-and-play compatibility with other providers, and infinite scalability
Whether building a UCaaS solution, modernizing a legacy IVR, augmenting CX with AI, or migrating from another providers APIs, our comprehensive technical references and guides have you covered. ## Try it out ## Get started ## Choose an API SignalWires advanced APIs and elastic cloud infrastructure make it a breeze to build modern and powerful voice applications using both PSTN and SIP endpoints. - **SignalWire REST API:** A robust, modern and flexible API for building integrated, advanced communications applications. - **Compatibility API:** Ideal for porting code from other providers. It can run serverless, but it also supports Python, PHP, Node.js, and other languages. - **Realtime API:** This API is ideal if you are an advanced developer and you want flexible, modern and realtime SDKs for Node.js. ## Low-code and no-code solutions ## Popular guides {/* Core links */} [cxml]: /compatibility-api/cxml [cfb]: /call-flow-builder