Difference Between HttpApi and HttpServer in Effect Typescript Library

const httpLive = HttpApiBuilder.serve(HttpMiddleware.logger).pipe(
  Layer.provide(HttpApiSwagger.layer()),
  Layer.provide(apiLive),
  HttpServer.withLogAddress,
  Layer.provide(NodeHttpServer.layer(createServer, { port: 3000 })),
  // Services
  Layer.provide(PrismaService.Default),
  Layer.provide(RPCService.Default),
  Layer.provide(NodeContext.layer),
);

// Launch the server
Layer.launch(httpLive).pipe(NodeRuntime.runMain);