The Zero Trust Network Access (ZTNA) solution includes the design and implementation of an access architecture based on identity, context, and continuous validation, replacing implicit trust models with dynamic and controlled access decisions.

The architecture is structured to ensure least privilege, segmented access to applications and resources, and continuous verification of users, devices, and sessions, reducing exposure to credential abuse and lateral movement.

A3A Engenharia de Sistemas develops each solution based on mapping of applications, user profiles, device posture, and criticality of assets, ensuring secure access aligned with operational and governance requirements.

SCOPE OF WORK

Within the scope of ZTNA solutions, A3A Engenharia de Sistemas can operate in the following areas:

Planning and Architecture

  • Mapping of applications and protected resources
  • Definition of identity and context-based access policies
  • Classification of users, devices, and trust levels
  • Integration planning with IAM, MFA, and segmentation layers

Implementation and Integration

  • Deployment of secure access brokers and connectors
  • Integration with corporate identity providers
  • Application of device posture and session validation rules
  • Restriction of access by profile, location, and risk level
  • Migration from VPN-centric models to application-centric access

Monitoring and Governance

  • Audit of granted and denied access
  • Monitoring of anomalous sessions and risk events
  • Periodic review of access policies and exceptions
  • Documentation of technical architecture and operating model

Evolution and Optimization

  • Inclusion of new applications and environments
  • Refinement of context-aware access rules
  • Expansion to hybrid and multicloud environments
  • Integration with broader Zero Trust strategies

APPLICATIONS AND ENVIRONMENTS

The solution applies to:

  • Corporate environments
  • Critical infrastructures
  • Remote and hybrid workforce scenarios
  • Industrial and OT environments with restricted access needs
  • Organizations with sensitive applications and strict governance requirements

The architecture is sized to ensure secure, contextual, and traceable access, reducing implicit trust and strengthening protection of critical resources.