Microservices and APIs offer a wide variety of methods for leveraging external services in order to improve the performance of your website or application. Nebula42 offers microservices consulting and implementation for a variety of platforms including:

Load Balancers
Memory Handlers
Data Management
Monitoring & Security Tools

Amazon Web Services (AWS)
EC2 / Lambda
S3 / Glacier
CloudWatch / CloudTrail
Route 53
API Gateway
RDS / DynamoDB
Auto Scaling

Recurly / Paypal / payment gateways
Intercom / Zendesk
Salesforce / 
Mailgun / Mailchimp
Evolution Nutrition / Trainerize