Microservices Architecture for UK eCommerce — UK GDPR Built In
ClickMasters provides Microservices Architecture for UK eCommerce businesses with UK GDPR, PECR compliance from Sprint 1.
Key Highlights
Compliance
+2 more standards
Pricing
Microservices Architecture for eCommerce — UK Specifics
eCommerce Microservices Domain Decomposition
UK eCommerce microservices: decompose by business capability, not technical layer. Recommended service boundaries: Product Catalogue Service (search, browse, filtering), Inventory Service (stock levels, reservations), Basket Service (user sessions, item management), Order Service (order lifecycle), Payment Service (Stripe/Adyen integration — PCI-DSS scoped), Fulfilment Service (warehouse management, carrier APIs), and Notification Service (email, SMS via GOV.UK Notify/Twilio). Payment Service isolation is critical — PCI-DSS scope contained within one service.
PCI-DSS Scope in eCommerce Microservices
PCI-DSS scope reduction via microservices: the Payment Service is the only service that touches payment data. Stripe Elements: card data never reaches the Payment Service (SAQ-A scope). The Order Service calls the Payment Service API — never handles card data itself. Each other service (Product, Inventory, Basket, Order) is completely out of PCI scope. Annual PCI ASV scan: scans Payment Service infrastructure only. Benefit: PCI-DSS compliance work focused on one service, not the entire platform.
UK GDPR Right to Erasure in eCommerce Microservices
Customer erasure across eCommerce services: CustomerErased event published to all services. Basket Service: delete saved baskets. Order Service: pseudonymise order history (keep order for HMRC 7-year retention but replace customer name/address with "Deleted User"). Product Service: delete wishlist and review history. Notification Service: delete contact preferences and unsubscribed emails. Each service confirms erasure completion to audit service within 24 hours.
eCommerce Peak Traffic and Auto-Scaling
UK eCommerce peak traffic patterns: Black Friday (4–6× normal), Christmas (2–3×), January sale (2×), Mother's Day/Father's Day (spike). ECS Fargate auto-scaling: scale out within 90 seconds of traffic spike. Services that need independent scaling: Product Catalogue Service (most read traffic — scale aggressively), Basket Service (session-heavy during peak), Payment Service (transaction-limited — scale conservatively to avoid Stripe rate limits). Product Catalogue: ElastiCache Redis cache reduces DB load during peak.
Compliance
UK GDPR
PECR
Consumer Rights Act
PCI-DSS
Equality Act
Cyber Essentials
Compliance & Regulations
Every solution we build for this industry is designed to meet the following regulatory and standards requirements.
UK GDPR
PECR
Consumer Rights Act
PCI-DSS
Equality Act
Cyber Essentials
Investment Options
Flexible engagement models tailored to your ecommerce project requirements.
£35,000–£180,000
Full engagement
- Industry-specific approach
- UK GDPR compliant
- Dedicated technical lead
£3,500–£8,000
Scoping
- Industry-specific approach
- UK GDPR compliant
- Dedicated technical lead
from £2,000/mo
Ongoing support
- Industry-specific approach
- UK GDPR compliant
- Dedicated technical lead
What Our Clients Say
Success stories from clients in ecommerce industry.
“ClickMasters transformed our digital infrastructure. Their understanding of UK fintech regulations saved us months of compliance work.”
Sarah Mitchell
CTO, FinTech Solutions Ltd
“The team's expertise in NHS integrations and DTAC compliance was invaluable. They delivered on time and within budget.”
Dr. James Cooper
Medical Director, HealthFirst UK
“Their grasp of FCA requirements and insurance sector nuances helped us launch our platform 40% faster than expected.”
Michael Brooks
CEO, InsureTech Pro
Frequently Asked Questions
Common questions about ecommerce software development.
How many microservices should a UK eCommerce platform have?
ClickMasters guideline for UK eCommerce microservices: 6–8 services for a mid-size platform (£5M–£50M GMV). More services = more operational complexity = more DevOps cost. Common mistake: creating a separate service for every database table (User Service, Address Service, Phone Service) — these belong in one Customer Service. Service boundary principle: each service should be independently deployable AND have a single, clear business capability.
Should UK eCommerce use microservices or a modular monolith?
Modular monolith for most UK eCommerce platforms under Series A: Next.js + Node.js monolith with clear module boundaries (product, cart, order, payment modules). Extract microservices when: team size exceeds 8 engineers (need independent deployment), a specific service needs to scale independently (e.g., product search at 100× normal traffic during flash sales), or PCI-DSS isolation requires Payment Service separation. ClickMasters has built both architectures for UK eCommerce — monolith for startups, microservices for established platforms.
Related ecommerce Services
eCommerce Development UK — Custom Platforms, Shopify & Marketplace Builds
Custom Software Development for UK eCommerce Companies — UK GDPR Compliant
SaaS Development for UK eCommerce Companies — UK GDPR Built In
Ready to Build for ecommerce?
Let us engineer a platform that meets your industry regulations, serves your users, and scales with your ambitions.