If you are from a Microsoft BizTalk Server integration background, you will know about the various artifacts needed to build an integration interface. These artifacts include schemas in the XSD file format, XSLT maps, trading partners, and agreements, and X.509 certificates for encryption and the signing of AS2 messages. Logic Apps' enterprise integration pack is a collection of these enterprise capabilities, which you can subscribe to via an integration account:

An integration account allows you to build Logic Apps with enterprise B2B capabilities by allowing developers to add various necessary artifacts. The following are the various artifacts that can be added with an integration account:

•  Schemas: These are standard .xsd files containing the definition of an XML message. If you have BizTalk installed, you can create a BizTalk schema project and add create XSD files visually. You can add these XSD files in an integration account. If you do not have BizTalk installed, you can download Logic Apps Enterprise Integration Tools for Visual Studio 2015, which helps users to create schemas.
• Maps: These are XSLT files that transform XML messages from one format to another. Similar to schemas, you can either use a BizTalk transformation project or the integration tools for Visual Studio 2015 to create XSLT files.
• Agreements: Business partners need to agree upon some standard rules and protocols to establish B2B communications with each other. These rules will be defined in agreements. These agreements are specific to protocols such as EDIFACT, X12, AS2, and others.
• Partners: This is an entity that defines trading partner information. Partner entities will come together in one or more agreements.
• Certificates: Since business transactions are sensitive and prone to security breaches, it is important to have a secure AS2 connection. AS2 connections make use of X.509 certificates. Public keys in the .cer format and private certificates in the .pfx format can be uploaded into certificates, and AS2 protocols will use these.
• Assemblies: In BizTalk maps, it is common to use helper .NET assemblies. To allow a similar approach in Logic Apps maps (XSLT files), you can upload assemblies into an integration account.