Soap, Encryption, Authentication, Rest Apis, Workday Studio, Xml, Smp, Access Points, Json, Boomi, Mulesoft, ERP integrations, Security, EU ViDA, UBL, Peppol Network Architecture, SII, Sml, electronic document exchange standards, Peppol, Digital Signatures, Azure Integration Services, middleware technologies, Avalara E-Invoicing, e-document transmission protocols, KSeF, compliance requirements, sdi, global tax compliance frameworks