The Technical - Application Domain specific view contains the most salient application Architecture Building Blocks that need to be considered to support technical aspects for the End-to-End analysis and design of Digital Solutions. A Digital Solution can support one or more public policies. Narrative: [Interoperable Digital Solution] aggregates [Shared Platform], and provides access to data and services. The [Interoperable Digital Solution] includes [Machine to Machine Interface] with [Human Interface], which both realise [Digital Public Service Delivery], which assign [Digital Public Service], which realize [Digital Business Capability]. Also [Machine to Machine Interface] and [Human Interface] assign [Digital Solution Service] which is realised by [Digital Solution Component]. [Interoperable Digital Solution] is influenced by [Technical Agreement], and its specialisation [Tech Interoperability Agreement] and [Service Level Agreement], all three elements constitute [Technical Governance Content]. [Shared Platform] includes [API Enablers] to register the system services in which [Web Service] which is a specialisation of [API], as well as [Machine to Machine Interface]. [API Catalogue Component] realises [API Discovery and Catalogue Service] which associate with [API Catalogue] which associate with [API]. [Service Registry] is associate with (is a) [Web Service] and [Service Discovery and Registry Service] which realized by [Service Registry Component]. Orchestration Enablers in which [Orchestration Component] realises [Orchestration Service]. Security Enablers in which [Audit Component] realises [Audit Service]. [Security Enablers] include a subset of Identification and Access Enablers where [Identification Component] realises [Authentication Service], [Request Validation Service], [Registration Service], and [Access Management Component] realises [Access Management Service] and its specialisations [Identity Management Service], [Authorisation Service], and the [Accounting Service]. [Test Enablers] in which [Conformance Testing Component] accesses [Conformance Test Scenario] and performs [Conformance Testing Service]. Trust between systems is established with Identity management is realised with [Trust Enablers] in which [Trust Service Provisioning Component] realises [e-Signature Creation Service],[e-signature Verification and Validation Service],[e-signature Preservation Service], [e-Seal Creation Service], [e-Seal Verification and Validation Service], [e-Seal Preservation Service], [e-Timestamp Creation Service], [e-Timestamp Verification and Validation Service], [Registered Electronic Delivery Service] and [Integrity Verification Service]. Also [Blockchain Component] realises [Blockchain Service]. In [Data Exchange Enablers] exist [Data Exchange Component] which realises [Data Exchange Service]. In [Data Management Enablers] exist the [Metadata Management Component] realises [Metadata Management Service]. [e-Archiving Component] realises [e-Archiving Service]. [Data Management Component] realises [Data Management Service]. [Forms Management Component] realises [Content Management Service] and [Forms Management Service]. [Data Publication Component] realises [Data Publication Service]. [Data Extraction, Transformation, and Loading Component] realises [Data Extraction, Transformation, and Loading Service]. [Data Quality Component] realises [Data Quality Service]. [Data Persistence Component] realises [Data Persistence Service]. There is also the [Data Virtualization Component] that realises [Data Virtualization Service]. In [Privacy Enablers] exists the [Privacy Component], which realises the [Privacy Service]. In [Knowledge Discovery Enablers] the [Knowledge Discovery Component] realises [Knowledge Discovery Component Service] which is associated with [Knowledge Triple stone]. In [Analytics Enablers] [Data Analytics Component] realises [Data Analytics Service]. In [Artificial Intelligence] the [Artificial Intelligent Component] realises [Artificial Intelligent Service]. [Translation Enablers] enable the possibility to increase the accessibility to public service through [Machine Translation Component] that realises [Machine Translation Service]. In [Users Experience Management Enablers] the [Public Administration Single Window Component] realises [Public Administration Single Window Service]. In [Digital Workplace Enablers] exist [Digital Workplace Component] which realises [Digital Workplace Service]. In [Schedule Management Enablers] the [Schedule Management Component] realises [Schedule Management Service], and the [Agenda Management Component] realises [Agenda Management Service], which is a specialisation of [Schedule Management Service]. The [Data Space Enablers] includes the [Data Space] which aggregates [Data Space Connector], and it has two specialisations, which are the [Data Space Connector Provider] and [Data Space Connector Consumer]. These different Architecture Building Blocks define the [Technical Application Functional content] and [Technical Application Governance content] The Architecture Building Blocks defined in the [Digital Solution] can have [Interoperability Specification] associated, which is a specialisation of [Solution Specification] and realises [Interoperability Requirement].