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Solstice Case Study

Solstice

Cloud-native microservices platform on AWS enabling scalable energy solutions, secure APIs, and high-volume transaction processing.

Project Overview

Solstice is a solar energy technology company focused on delivering intelligent energy solutions, including customer onboarding, billing automation, partner integrations, and energy analytics. The platform was redesigned to support rapid growth, scalability, and high transaction volumes.

Industry

Renewable Energy
Solar Energy Technology
Energy Analytics
FinTech Integration

Context and Challenges

Monolithic architecture limiting scalability
Lack of automated CI/CD pipelines
Inefficient deployment strategies causing downtime
Tight coupling between services and database
No standardized cloud infrastructure

Client Requirements

Rapid onboarding of customers and partners

High availability for billing and credit scoring

Scalability for increasing API traffic

Secure and centralized API access

Faster release cycles with minimal downtime

Environment isolation across Dev, Staging, Production

Planning

01

Provision AWS VPC, IAM, security groups and EKS cluster for development

02

Replicate staging environment with production-like configuration and load balancing

03

Deploy production-grade EKS with Multi-AZ RDS and advanced deployment strategies

Strategy and Solution

A cloud-native microservices architecture was designed using AWS and Kubernetes, enabling scalability, resilience, and faster deployments.

Domain-driven microservices architecture
Centralized API gateway using Gloo
AWS EKS for container orchestration
Jenkins X for CI/CD automation
AWS ECR for container image management
RDS PostgreSQL for data persistence

Architecture Highlights

Route53 → ALB → Gloo API Gateway traffic flow
Microservices deployed across Kubernetes namespaces
Independent services: Identity, Billing, Scoring, Analytics
Direct CI/CD deployment using Jenkins X
Secure secrets using AWS Secrets Manager

Technologies and Tools

Cloud & Infrastructure

  • AWS (EKS, RDS, ECR, VPC, ALB, Route53)

Container & Orchestration

  • Kubernetes (Amazon EKS)

CI/CD

  • Jenkins X (Tekton pipelines)

API Gateway & Networking

  • Gloo API Gateway
  • AWS ALB

Database & Cache

  • PostgreSQL (RDS)
  • Redis (ElastiCache)

Security

  • AWS IAM
  • AWS Secrets Manager
  • AWS WAF

Monitoring

  • Prometheus & Grafana
  • AWS CloudWatch

Architecture

On-prem Kubernetes platform with Rancher, GitOps, service mesh, and observability stack.

Highlights

Fully automated CI/CD pipeline
Kubernetes-based scalable architecture
Zero-downtime deployments
Secure API gateway with rate limiting
Containerized workloads with ECR
Multi-environment architecture

Outcome

Migrated from monolith to microservices
Achieved high availability and fault tolerance
Reduced deployment time significantly
Enabled independent service scaling
Improved developer productivity

Benefits

Business

Faster time-to-market

Improved customer experience

Scalable growth platform

Technical & Security

Modular architecture

Automated CI/CD

Secure and reliable infrastructure