# Exchange and outlook **¿Cual es la diferencia entre exchange y "outlook"?** - Existen varias modalidades que microsoft ofrece para utilizar su servico de [Exchange](https://docs.microsoft.com/en-us/exchange/) Dentro de las cuales se aprecian: - [Exchange Server](https://products.office.com/es-cl/exchange/microsoft-exchange-server) Esta es la que actualmente usa Dunalastair. - [Exchange Online](https://products.office.com/es-CL/exchange/exchange-online) - [Exchange Hybrid Deployments](https://docs.microsoft.com/en-us/exchange/exchange-hybrid) **¿Cómo podemos acceder al calendario de los clientes?** 1. La solución que ofrece microsoft para interactuar con su servicio de mails y calendario es [Microsoft Grap Rest Api for calendar, mail and contacts](https://docs.microsoft.com/en-us/exchange/client-developer/exchange-web-services/office-365-rest-apis-for-mail-calendars-and-contacts) Que actualmente utilizamos en Equip. - Precisa que "Find information about the Microsoft Graph APIs that you can use to access mail, calendars, and contacts in Office 365, Exchange Online, or Exchange Server in hybrid deployments." - Alternativa a graph, [Exchange Web Services (EWS) application](https://docs.microsoft.com/en-us/exchange/client-developer/exchange-web-services/start-using-web-services-in-exchange) - Existe una librería para [node](https://github.com/gautamsi/ews-javascript-api) pero es muy básica. - Aquí aparentemente hay [un ejemplo para traerse los eventos del día ](https://stackoverflow.com/questions/49422190/how-to-get-list-of-today-meetings-from-ews-using-ews-javascript-api) **¿Cómo podría dunalastair empezar a utilizar microsoft graph?** - [Migrar mailboxes from exchange server to exchangeOnline](https://docs.microsoft.com/en-us/Exchange/mailbox-migration/mailbox-migration#StagedorCutover) - [Implementación hibrida de Exchange (on premise & Microsoft Office 365)](https://docs.microsoft.com/en-us/exchange/exchange-hybrid) - [Requisitos para una implementación hibrida de exchange](https://docs.microsoft.com/en-us/exchange/hybrid-deployment-prerequisites)