High Availability Architecture
High-availability architectures — redundancy, failover, load balancing and graceful degradation for critical systems.
Region Aactive
Region Bstandby
Async replication · automated failover · backups tested
Observability
Security
Division
Service area
Cloud Architecture, Migration & Operations
Engagement
Project · Team · Managed
Overview
High availability keeps systems running through component failures. We design architectures with redundancy across availability zones, health-checked load balancing, stateless services, replicated data, automated failover and graceful degradation — and validate them with failure testing, so availability targets are met in practice.
Common use cases
- Payment and trading systemsSystems where downtime is costly.
- SaaS platformsUptime commitments to customers.
- Public servicesSystems citizens depend on.
- E-commerce peaksResilience during traffic spikes.
Quick answers
High Availability Architecture at a glance
The essentials in brief. Every project is scoped individually — ask us for specifics.
- What is high availability architecture?
- High-availability architectures — redundancy, failover, load balancing and graceful degradation for critical systems.
- Who is it for?
- Typically companies migrating to the cloud, teams whose releases are slow or risky, and organisations that need stronger reliability, security or cost control.
- What does Shivacha provide?
- Multi-AZ design
- Load balancing
- Stateless services
- Data replication
- Graceful degradation
- Chaos testing
- Which technologies are used?
- Amazon Web Services, Microsoft Azure, Google Cloud, Terraform, Kubernetes, Cloudflare — chosen to fit your stack and constraints.
- How does the process work?
- Discovery & assessment → Landing zone → Migration waves → Optimisation → Managed operations.
- What affects the cost?
- Number of applications and environments
- Compliance and data-residency requirements
- Availability and recovery objectives
- Existing automation and IaC maturity
- Multi-cloud or hybrid scope
- Ongoing managed-service needs
- How long does it take?
- Assessments take 2–4 weeks; platform builds and migrations are usually delivered in 2–6 month phases.
- How do I get started?
- Share a short brief in the form below, book a 30-minute call or message us on WhatsApp. A senior engineer replies within one business day; NDA on request.
Capabilities
What we deliver
Multi-AZ design
Redundancy across zones.
Load balancing
Health checks and traffic distribution.
Stateless services
Easy scaling and replacement.
Data replication
Synchronous and asynchronous replicas.
Graceful degradation
Core functions preserved under stress.
Chaos testing
Validating resilience with failures.
Architecture
Engineered right from day one
The layers we typically design for cloud architecture, migration & operations, adapted to your stack and partners.
- Right migration strategyNot everything should be refactored; not everything should be lifted.
- Data residencyRegion choices aligned with regulatory and customer requirements.
- Cost governanceTagging, budgets and alerts from day one.
- Tested recoveryDisaster recovery exercised, not just documented.
Delivery
How an engagement runs
- 1
Discovery & assessment
Inventory, dependencies, performance baselines and cost model.
- 2
Landing zone
Account structure, network, identity and guardrails as code.
- 3
Migration waves
Rehost, replatform or refactor per workload with rollback plans.
- 4
Optimisation
Rightsizing, reserved capacity and architecture improvements.
- 5
Managed operations
Ongoing monitoring, patching, backups and incident response.
Security
Security built into delivery
Controls we apply by default on this kind of work — not a separate phase at the end.
Infrastructure as code
Every change reviewed, versioned and reproducible.
Identity & network
Least-privilege IAM, private networking and zero-trust access.
Secrets & encryption
Central secrets management and encryption by default.
Monitoring
Alerting, audit logs and incident runbooks from day one.
Technology
Tools we use for this
Related services
Often combined with
Cloud Consulting
Independent cloud consulting — strategy, provider selection, architecture, cost models and migration roadmaps.
Learn moreCloud Migration
Migrate applications and data to the cloud safely — assessment, landing zones, migration waves, cut-over and optimisation.
Learn moreAWS Development & Architecture
Build on AWS — architecture, serverless and container workloads, data services, security and cost optimisation.
Learn moreDedicated team
Cloud Engineering Team
Cloud architects and engineers for AWS, Azure and Google Cloud.
Work & insights
Related thinking
Tested disaster recovery for a critical transactional system
Our approach to designing and — crucially — regularly testing disaster recovery for systems that cannot lose data.
Learn moreInternal developer platform on Kubernetes with GitOps
How we build paved roads so product teams can create, deploy and operate services without infrastructure tickets.
Learn moreDisaster recovery you haven't tested is a hope, not a plan
Backups are not recovery. Define objectives, automate restoration and rehearse — including the ransomware scenario.
Learn moreFAQ
Frequently asked questions
What availability can we achieve?
It depends on architecture, dependencies and budget; each additional nine requires significantly more investment. We design to your agreed targets.
Is multi-region always necessary?
No. Multi-AZ covers most failure scenarios; multi-region adds protection against regional outages at higher cost and complexity.
Which cloud should we choose?
It depends on your workloads, existing licences and contracts, team skills, data residency and specific managed services you need. We provide a neutral comparison and recommendation.
Can you reduce our cloud bill?
Usually. Common savings come from rightsizing, scheduling non-production environments, storage lifecycle policies, commitment discounts and architectural changes. We quantify opportunities after an assessment rather than promising percentages up front.
Next step
Discuss Enterprise Deployment.
Tell us about your high availability architecture requirements — goals, timeline and constraints. We will reply with questions, an approach and next steps.
- Senior engineer reads every enquiry
- Reply within one business day
- NDA on request
Your details are used only to reply to this enquiry.